Double seal

Buy Radiator Cap 0.90bar - Universal Nippy Double Seal (Echlin) for R38.00

SEAL REAL COVER DOUBLE LIP HINO 500 - SEAL REAL COVER DOUBLE LIP HINO 500

The quality of a bearing arrangement is decisively influenced by the components shaft, housing, seal that are directly adjacent to the bearing.Seals play a decisive role in protecting bearings againstcontamination. If inadequate seals are used, contaminants can penetrate the bearing or an unacceptably large quantity of lubricant may escape from the bearing. Solid contaminants lead to wear and/or fatigue of the raceways and rolling elements. Bearings that are contaminated or running dry will fail long before they reach their fatigue rating life. When designing the bearing arrangement, the use of seals that are correctly matched to the application is decisive in determining the operating life of the bearings.

M10 x 1.00 Stainless Double Banjo Bolt Motorcycle Brake Caliper Master Cylinder Package weight: 0.03 kg M10 x 1.00 Stainless Double Banjo Bolt Motorcycle Brake Caliper Master Cylinder Description: 100% Brand new and high quality. Adapters let you remove brake hoses without breaking banjo bolt seal This thread pitch is suitable for many motorcycle applications Stainless steel more robust, corrosion-resistant and better. Fits bolt sizes 10mm Fits single or double bolt sizes Specification: Color:like the pic Weight:33g Size: M10 x 1.00mm Finish:CNC Machined, Pre-drilled for safety wire Package quantity: 1pc Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 3. Instruction is not included. Package included: 1x Double Banjo Bolt Motorcycle 3x Banjo Washers Click here for more deals M10 x 1.00 Stainless Double Banjo Bolt Motorcycle Brake Caliper Master Cylinder M10 x 1.00 Stainless Double Banjo Bolt Motorcycle Brake Caliper Master Cylinder

M10 x 1.00 Stainless Double Banjo Bolt Motorcycle Brake Caliper Master Cylinder Description: 100% Brand new and high quality. Adapters let you remove brake hoses without breaking banjo bolt seal This thread pitch is suitable for many motorcycle applications Stainless steel more robust, corrosion-resistant and better. Fits bolt sizes 10mm Fits single or double bolt sizes Specification: Color:like the pic Weight:33g Size: M10 x 1.00mm Finish:CNC Machined, Pre-drilled for safety wire Package quantity: 1pc Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 3. Instruction is not included. Package included: 1x Double Banjo Bolt Motorcycle 3x Banjo Washers

M10 x 1.25 Brake Caliper Master Cylinder Stainless Double Banjo Bolt Motorcycle Description: 100% Brand new and high quality. Adapters let you remove brake hoses without breaking banjo bolt seal This thread pitch is suitable for many motorcycle applications Stainless steel more robust, corrosion-resistant and better. Fits bolt sizes 10mm Fits single or double bolt sizes Specification: Color:like the pic Weight:33g Size: M10 x 1.25mm Material:Stainless Steel Finish:CNC Machined, Pre-drilled for safety wire Package quantity: 1pc Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 3. Instruction is not included. Package included: 1x Double Banjo Bolt 3x Banjo Washers

Lightforce 30" Double Row Dual Wattage Product Info Lightforce legendary performance is now available in next generation LED light bars, extruded from 6063 aluminium and finished in a UV-resistant anodised coating to face some of the harshest conditions in the world. The Lightforce LED light bar range is rugged and impact resistant, featuring a hard coated polycarbonate lens for durability and a waterproof rating to IP69K as standard. The Lightforce range of dual wattage LED bars (XP Series) utilise 3w and 10w LEDs in the one bar to produce increased light penetration for long range illumination providing the ultimate in lighting performance. This Light bar range utilises high output European LEDs tuned within the reflectors to produce unparalleled performance in its class. Complete with a waterproof Deutsch connector ¿ including full wiring harness with multiple mounting options available ¿ the Lightforce LED Light Bar range delivers powerful performance in a simple package. Specifications: Extruded 6063 aluminium body with black anodized coating IP69K rated to protect against moisture / contaminant ingress Hard coated, scratch and high impact resistant polycarbonate lens Custom fabricated dual injected moulded strain relief connector, fitted to military specification grade cable Genuine Gore® waterproof membrane with mechanical seal Submersible to 3 meters (3.28 ft) Over, under and reverse voltage protection Pulse width modulation thermal management circuitry Electromagnetic (EMC) and radio frequency (RFI) reduction circuitry Stainless steel brackets and mounting hardware Comprehensive wiring harness Broad operating voltage range of 10 ~ 36 volts Deutsch waterproof connector RoHS certified Colour temperature 5000k Package Contents: Lightforce 30" Double Row Dual Wattage

Lightforce 6" Double Row Light Bar 5w Combo (3360 Lumens) Product Info Lightforce performance is now available in next generation LED light bars, extruded from aluminium and finished in a UV resistant anodised coating to face some of the harshest conditions in the world. The Lightforce LED light bar range is rugged and impact resistant, featuring a hard coated polycarbonate lens for durability and a waterproof rating to IP69K standard. The light bar range utilises high output European LEDs tuned within the reflectors to produce unparalleled performance in its class. With multiple mounting options available and complete with a waterproof Deutsch connector ¿ including full wiring harness ¿ the Lightforce LED light bar range delivers powerful performance in a simple package. Features: Extruded 6063 aluminium body with black anodized coating IP69K rated to protect against moisture / contaminant ingress Hard coated, scratch and high impact resistant polycarbonate lens Custom fabricated dual injected moulded strain relief connector, fitted to military specification grade cable Genuine Gore® waterproof membrane with mechanical seal Submersible to 3 meters Over, under and reverse voltage protection Pulse width modulation thermal management circuitry Electromagnetic (EMC) and radio frequency (RFI) interference circuitry Stainless steel brackets and mounting hardware Comprehensive wiring harness Broad operating voltage range of 10 ~ 36 volts Deutsch waterproof connectors RoHS certified Specifications: Available in ¿spot¿ and ¿combination¿ reflectors LED quantity; 12 pieces Weight: 1.27 kgs / 2.8 lbs Amp draw 2.3@ 13.2V Raw wattage: 60W Input wattage: 30W Raw lumens: 3360 Effective lumen output: 1776 Distance to 1 LUX ¿ Spot = 267m Combo = 228m Package Contents: Lightforce 6" Double Row Light Bar 5w Combo (3360 Lumens)

Lightforce 20" Double Row Light Bar 5w Combo (11200 Lumens) Product Info Lightforce performance is now available in next generation LED light bars, extruded from aluminium and finished in a UV resistant anodised coating to face some of the harshest conditions in the world. The Lightforce LED light bar range is rugged and impact resistant, featuring a hard coated polycarbonate lens for durability and a waterproof rating to IP69K standard. The light bar range utilises high output European LEDs tuned within the reflectors to produce unparalleled performance in its class. With multiple mounting options available and complete with a waterproof Deutsch connector – including full wiring harness – the Lightforce LED light bar range delivers powerful performance in a simple package. Features: Extruded 6063 aluminium body with black anodized coating IP69K rated to protect against moisture / contaminant ingress Hard coated, scratch and high impact resistant polycarbonate lens Custom fabricated dual injected moulded strain relief connector, fitted to military specification grade cable Genuine Gore® waterproof membrane with mechanical seal Submersible to 3 meters Over, under and reverse voltage protection Pulse width modulation thermal management circuitry Electromagnetic (EMC) and radio frequency (RFI) interference circuitry Stainless steel brackets and mounting hardware Comprehensive wiring harness Broad operating voltage range of 10 ~ 36 volts Deutsch waterproof connectors RoHS certified Specifications: Available in ‘combination’ reflector LED quantity; 40 pieces Weight: 3.18 kgs / 7 lbs Amp draw 7.4 @ 13.2V Raw wattage: 200W Input wattage: 98W Raw lumens: 11200 Effective lumen output: 5970 Distance to 1 LUX – Combo = 458m Package Contents: Lightforce 20" Double Row Light Bar 5w Combo (11200 Lumens)

Lightforce 10" Double Row Light Bar 5w Combo (5600 Lumens) Product Info Lightforce performance is now available in next generation LED light bars, extruded from aluminium and finished in a UV resistant anodised coating to face some of the harshest conditions in the world. The Lightforce LED light bar range is rugged and impact resistant, featuring a hard coated polycarbonate lens for durability and a waterproof rating to IP69K standard. The light bar range utilises high output European LEDs tuned within the reflectors to produce unparalleled performance in its class. With multiple mounting options available and complete with a waterproof Deutsch connector – including full wiring harness – the Lightforce LED light bar range delivers powerful performance in a simple package. Features: Extruded 6063 aluminium body with black anodized coating IP69K rated to protect against moisture / contaminant ingress Hard coated, scratch and high impact resistant polycarbonate lens Custom fabricated dual injected moulded strain relief connector, fitted to military specification grade cable Genuine Gore® waterproof membrane with mechanical seal Submersible to 3 meters Over, under and reverse voltage protection Pulse width modulation thermal management circuitry Electromagnetic (EMC) and radio frequency (RFI) interference circuitry Stainless steel brackets and mounting hardware Comprehensive wiring harness Broad operating voltage range of 10 ~ 36 volts Deutsch waterproof connectors RoHS certified Specifications: Available in ‘combination’ reflector LED quantity; 20 pieces Weight: 1.81 kgs / 4 lbs Amp draw 3.6 @ 13.2V Raw wattage: 100W Input wattage: 48W Raw lumens: 5600 Effective lumen output: 3016 Distance to 1 LUX – Combo = 327m Package Contents: Lightforce 10" Double Row Light Bar 5w Combo (5600 Lumens)

Lightforce 20 inch DOUBLE ROW LIGHT BAR 5W COMBO 11200 Lumens Extruded 6063 aluminium body with black anodized coating IP69K rated to protect against moisture / contaminant ingress Hard coated, scratch and high impact resistant polycarbonate lens Custom fabricated dual injected moulded strain relief connector, fitted to military specification grade cable Genuine Gore® waterproof membrane with mechanical seal Submersible to 3 meters 2 Year National Warranty Product Code: CBLEDBD20C Lightforce

Lightforce 30 inch DOUBLE ROW DUAL WATTAGE Extruded 6063 aluminium body with black anodized coating IP69K rated to protect against moisture / contaminant ingress Hard coated, scratch and high impact resistant polycarbonate lens Custom fabricated dual injected moulded strain relief connector, fitted to military specification grade cable Genuine Gore® waterproof membrane with mechanical seal Submersible to 3 meters 2 Year National Warranty Product Code: CBD30XPLightforce

Leather seats, 18 inch wheels, Tow bar, Roll bar, Tonneau cover, PDC Front and Rear, Rhino Lining and Dust Seal on the cab.     See more details and contact the seller

Leather seats, 18 inch wheels, Tow bar, Roll bar, Tonneau cover, PDC Front and Rear, Rhino Lining and Dust Seal on the cab.R 320,000

Process mild steel, st steel, Al sheets, Galvanized sheets, Titanium plates 0.5-6mm. Features: Light beam design, good rigidity, light weight and tiny moving inertia. Y axis adopts double motors with double drives. XYZ axis equipped with round rail, moving smoothly, of high accuracy. Square rail optional. Excellent performance on cutting illuminated letters for advertising and channel letters on metal surface board. Work together with other advertising machines, such as CNC router and so on, improving working efficiency. High cutting speed, high accuracy and low cost. Advanced CNC control system, auto arc, arcing success rate over 99%. Support G code files of ucancam, ARTCAM,Type3 software. Also support DXF files o AUTOCAD by transfer software. Control system supports U disk file transfer. Parameters: Working area: 1.3x2.5m/ 1.5x3m Processing material: Mild steel, st steel, Al sheets, Galvanized sheets, Titanium plates. Cutting thickness: 0.5-6mm Cutting speed: 0-8000mm/min Consuming power 8.5Kw Input voltage: 3 phase 380V 50Hz Plasma power: 60A-100A Files transfer: USB interface Arc: Untouched arc striking Over 18 years experienced in cnc cutter manufacturing, own office located in Sebenza, Edenvale, Gautheng provide machine of good quality, all kinds of parts and professional service. Brand new direct import from own mfn. Free installation and training, one year free service. Will produce table size by order. Products covering cnc routers,cnc laser engraving and cutting machine, cnc fiber laser cutting machine, cnc metal and non-metal laser cutting machine, cnc marble router, cnc plasma cutter for ads, cnc plasma cutter for industry, bending machine, laser marking machine, laser seal engraving machine. Provide local customers with various products and best after-sales service. Rose 787 - show phone - 0 contact whats app 795 - show phone - 0

Shoei Pinlock Fog-Resistant Lens for C-49 Shields Specially designed to install on C-49 shields with built-in pins, the PINLOCK Fog-Resistant Lens transforms your single shield into a dual shield that will resist any amount of fog buildup. Fogging up is a thing of the past! The Pinlock System is based on three basic principles, which work together like nothing else. Moisture absorbing material: Unlike the face shield, the Pinlock insert lens is made of a soft and porous plastic. Material thickness: Because thicker material absorbs more moisture and offer more impact protection. Double lens system: The airtight pocket in between the Pinlock insert lens and the face shield creates an extra insulation layer, further increasing the anti fogging properties of the total system. Pinlock Lens Insert created out of a moisture absorbing plastic, the integrated silicone seal creates an air tight double visor when combined with a Pinlock Shield. Fits Do not combine a Pinlock tinted lens with a Pinlock prepared tinted shield. Only use a Pinlock clear lens with a Pinlock prepared tinted shield. Images are to demonstrate color only. Shield shape and features may differ from image. This lens will fit all the Shoei shields listed above.

Leather Steering wheel / Perforated Grained Leather Seats / Auto Headlamp On/Off / Cruise Control / Ambience Lighting / Land Rover Sound System / Bluetooth - Audio stream / Push Button Start / Double Locking / Weather protection Seal /R 664,418 Body Type SUV Colour Grey Doors 5 Engine Capacity 2.2 Fuel Type Diesel Service History full franchise service history Transmission Automatic Transmission Drive Type four wheel drive

Privacy Glass / Bluetooth - Audio Stream / Land Rover Sound System / Push Button Start/ Weather Protection Seal / Conventional Tailgate / Double Locking /R 653,018 Body Type SUV Colour Grey Doors 5 Engine Capacity 2.2 Fuel Type Diesel Mileage 30 Service History full franchise service history Transmission Automatic Transmission Drive Type four wheel drive

Ref: F205030 Weight: 4.5Kg 7mm Thick Plate Min internal 230mm wide Max internal 430mm High strength container lock & cargo door lock suitable for trucks and containers. High strength metal welding, thickness of steel 7mm resistant to bolt cutters. Special 7mm plate used for container locks. Made from high tensile spring steel, making it extremely difficult to saw through. Laser cut locking holes for accuracy. Specially bent lock claws engineered by suspension and spring makers. Baked and hardened at 1000 degrees Celsius and case hardened. Incredibly strong locking claws - bolt cutter proof. Due to flexible adjustments the 5th lock can be used on any cargo vehicle to shipping containers. 13mm locking shaft, easily replaced - if lost at low cost. Robust heavy duty structure - weighs 4.5 kilograms, extremely rigid. Clever locking system - uses union cylinder bolt sleeve. 2 keys per lock accommodate shipping seal in lock housing or insert large pad lock for extra security. Double locking system can lock most shipping container locks with lock rod distances between 340mm to 420mm. Suitable for all applications and industries - e.g. construction companies, government, container shipping companies, container manufacturers, transporters, freight companies, etc. Excellent value - no other lock compares - guaranteed. Locks rods doors from 230mm to 430mm apart. Electro-plated for extra durability. Reuse from one truck or container - fully transferable. Excellent investment in theft deterrence, reduce losses & break-ins during transit.

A Pair of 12V Toyota YARiS L Daytime Running  Led Light Fox's Eye Fog Light  Description: Daytime running lights, LED lights installs in front of the body of vehicle. Its efficacy is not to make the driver can see the road, but to let people know  there is a car.This lamp is not lighting, but a semaphore. Of course, the installation  of daytime running lights can make the car look cooler, more energetic, the data shows 32.6% reduction in vehicle accidents, also can reduce  26.4%  for the accident risk of dying.  In short, the purpose of daytime running lights is to keep the traffic safety.  Features: High Brightness Special design for the only Cars With fog cover,just need to replace the original car fog lamps mask Good Seal,dust-free,anti-collision, splash-resistant,safe and reliable 13v safe voltage, double insulation, no harm to human in the rain The service life is up to 50000 hours. Specification: Voltage 13V Material ABS Fit Toyota YARiS L Wattage High-power Weight 1.4kg Color Temperature 6000K Package included: 2×12V Toyota YARiS L Daytime Running  Led Lights

2003 gypsey regal caravan in nice condition with aircon, full tent. Large double door fridge installed, and a multiroom for the tent. Full service and seal and 6 month warranty included. Please contact Bryan for more information on 835 - show phone -.

Pelican Waterproof Hard Case - 1170 (Black)   The  Pelican Waterproof Hard Case - 1170 (Black)  has been put through any imaginable test and survives just about everything. It's waterproof, crushproof and dustproof! Dimensions: Interior (L X W X D) - 26.8 x 15.3 x 8 cm, Exterior (L X W X D) - 29.6 x 21.2 x 9.6 cm   Product Information   The hand-held electronics protection solution Watertight, crushproof, and dustproof Easy open Double Throw latches Open cell core with solid wall design - strong, light weight O-ring seal Automatic Pressure Equalization Valve - balances interior pressure, keeps water out Stainless steel hardware Pick N Pluck¿ with convoluted lid foam   Dimensions   INTERIOR (L X W X D) 26.8 x 15.3 x 8 cm EXTERIOR (L X W X D) 29.6 x 21.2 x 9.6 cm   Specifications   CERTIFICATIONS: IP67 MAXIMUM TEMPERATURE: 99 ° C MINIMUM TEMPERATURE: -40 ° C BUOYANCY: 3.3 kg WEIGHT WITHOUT FOAM: 0.9 kg WEIGHT WITH FOAM: 1 kg INT VOLUME: 0.003 m³ TOTAL DEPTH: 8 cm BOTTOM DEPTH: 5.3 cm LID DEPTH: 2.7 cm PURGE O-RING: 70 Shore Nitrile PURGE VENT: 3 Micron Hydrophobic Non-Woven PURGE BODY: ABS FOAM: Polyurethane PINS: Stainless Steel O-RING: Polymer LATCH: ABS BODY: Polypropylene   Guarentee   Lifetime Guarantee of Excellence

Description: 100% brand new. Comes with software CD. Advanced production technology, durable. With most SEAT and Skodas sold outside of N. America. Built-in single-chip design, intelligent conversion double K line. Seal of the circuit, durable and suitable for harsh environment. For 96 97 Audi A6 series and all European BPassats and B5 Audi A4, A8 series. Circuit insulation sealing, waterproof, anti-static, adapt to bad environment. Super level isolation (> 1000 v), protect the computers will not damage. All electronic components world famous top products and reliable performance. Able to use the new seven PIN/SKC code to match any outfit mobilizer anti-theft system of VW/Audi/Seat/Skoda. Specification: Weight(Kg):0.3 Color:Red Size:11x7.5x3cm Cable Length: 50cm Display: Backlit LCD, 2-line, 8 characters Working Temperature: -60 to 60°C Power: 12V Package Included: 1 X OBD2 Cable 1 X CD

Description: 6000 2RS Ball Bearing 10x26x8mm Red Sealed Rubber Shields Deep Groove Ball Bearing   Specification: Material: Titanium+Stainless Steel Structure: deep groove Seal type: 2RS Inner Diameter: 10mm Outer Diameter: 26mm Width: 8mm Quantity: 1pc   Features: Deep groove ball bearing. 2RS double sided shield sealing design,protect the bearing efficiently,easy to clean. High strength and speed. Ideal for skateboard usage.   Package Included: 1pc x Deep Groove Ball Bearing Notice:  1. Please allow a bit error due to manual measurement. please make sure you do not mind before you bid. 2. The color may have different as the difference display, pls understand.   More Details:

DOT approved. Lightweight Thermo-Plastic Alloy shell. Multiple shells and styros for GMAX premium fit and maximum comfort. Two shell sizes, XS-L and XL-XXXL. Inner flip tint sun lens, with the best anti-fog coating available today. Inner flip shield is easily raised or lowered with a lever located on the exterior of the helmet. Optional state of the art anti-fog, maximum seal, double lens shield comes with anti-scratch hard coated outer lens for a longer lasting clear view. Integrated multi-function red LED rear light. Excellent shield sealing reduces unwanted air and noise. SPC top front vents, interior and styro designed for controlled air flow. GMAX D.E.V.S. (dual exhaust venting system) top, side and rear vents reduce fogging and sweating by allowing hot air to escape from the mouth area and the top of the head. Adjustable chin vent directs air upward across the inside of the shield to help reduce fogging. Large eyeport for improved range of vision. Deluxe ear pockets for better fit and comfort. Built in speaker pockets for communication systems. Removable, adjustable, washable Dupont Coolmax interior for added performance keeps you dry and comfortable. Coolmax moves moisture away from your body and dries quickly. One hand easy to use chin bar push to open mechanism designed for easy use with gloves on. GMAX Ultimate function flip up jaw breath guard system. Optional snap-in breath guard remains in the jaw when the jaw section is lifted thus eliminating the additional hassle of removing your gloves and un-hooking the claustrophobic breath guard as Protective aesthetic lower rubber molding around the bottom of the helmet shell. Optional snap-in removable chin curtain, vented or non-vented chin curtains for maximum adjustability and comfort. Soft padded chin strap. Painted shell with high-tech water decals and high quality clear coat finish. Helmet bag included. Distinct N

The 100% Max Vision Pinlock ProtecTINT sun rea photochromatic, fog-resistant insert lens changes from to light smoke. 100% Max Vision provides a clear view throughout the complete eye port of the shield. The b solution for all-weather riders. Dry hydrofilic technology. Double shield system created by a silicone seal. Easy to install and interchangeable with other Pinlock lenses. The lens adapts to UV light conditions

2pcs 6 inch 120W High Power LED Strip Lights Off-Car Top Refit Light Bar Working Lamp, Key Features… — Awesome high-quality Philips LED lights emit 6000k brightness white light, providing 120w and 12000lm to effectively illuminate the dark. — The middle 170° floodlights are surrounded by a double row of 15° spotlights for long range and wide field of view. — IP68 rated housing and a shatterproof lens that is completely resistant to dust and moisture. — Ultrathin light, multi-layer radiator design system to solve the problem of heat after long hours of work., Manufacturer Specifications General Description: Item type: Car LED strip lights Life time: about 50,000 hours Operating temperature: – 40-85℃ Color: pure white 6000k LED quantity: 40pcs * 3W strong Philips LED Power:120w (Brightness 12000LM) Material: aviation aluminum alloy die-casting shell, PC mirror, 304 stainless steel bracket; Features: Water and dust-proof seal IP68 Operating voltage: DC 9-30v Package includes: 2pcs 6inch LED lights 1pcs Base 1pcs Installation Accessory set Features: –High Quality –Easy to Install –Long Life Service Note: The colors deviation might differ due to different monitor settings, please kindly understand. Please tell us first when you have any problem, we will give you the best service and solve the problem ASAP. Thank you so much.

PRODUCT DETAILS Polycarbonate lens with premium anti-scratch & anti-fog coatings Light weight yet durable polyurethane frame Engineered frame design increases field of view providing massive peripheral vision Quick change replacement lens with pre-installed tear-off posts Premium multilayer face foam provides superior moisture management and a tight seal Outriggers provide optimal fit Optional accessories and lens colors available Removable Fly nose guard 45mm adjustable double buckle strap for easy goggle tension adjustment Non-slip silicone on inside of strap ensures a secure fit to your helmet Nose Guard Extra, Polycarbonate clear lens with premium anti-scratch, anti-fog and pre-installed tear off posts Microfiber goggle bag  

PRODUCT DETAILS Polycarbonate lens with premium anti-scratch & anti-fog coatings Light weight yet durable polyurethane frame Engineered frame design increases field of view providing massive peripheral vision Quick change replacement lens Two-layer face foam provides all day comfort and a tight seal Compatible with Fly nose guards 40mm adjustable double buckle strap for easy goggle tension adjustment Non-slip silicone on inside of strap ensures a secure fit to your helmet