SIZE: Rim thickness 0.28"-0.51", 12 inch in length . These longboard edge guards which will protect your deck from nicks, chips & scratches, for almost all skateboards & Longboard. Suitable for any boards with 8-12mm thickness. DURABLE Skateboard Deck Guards Protector: Waterproof, corrosion resistant, flexible under extreme cold or heat,anti-aging Ethylene Propylene Diene Monomer Rubber. DURABLE Skateboard Deck Guards Protector: Waterproof, corrosion resistant, flexible under extreme cold or heat,anti-aging Ethylene Propylene Diene Monomer Rubber. OTHER APPLICATIONS: Also can be used to cover any sharp or dull metal edge, protect your loved ones from the hard, sharp corners and edges in your home, school, daycare, preschool, hospital, assisted living facility, senior housing, work area, office, museum, restaurant, hotel and more.