NON-SLIP There are raised lines on the surface of the bike grips, which increase the friction in the grips and hands, improving the anti-slip performance greatly, ensuring you don't let go of the handlebar while cycling . DUSTPROOF AND WATERPROOF 2 end caps in the package makes these bicycle handlebar grips well dustproof and waterproof, the end caps help prevent dust and rain from entering the grips so that the handlebar will not rust. COMFORTABLE Made of high quality rubber and resin material, our bicycle grip offers you comfortable tactile feelings for long cycling enjoyment. The aluminum alloy locking ring ensures that the handle will not fall off during use. UNIVERSAL Handlebar Diameter - 22mm, Handle Length: 13cm. Adapting standard bicycle handlebar diameter, ROCKBROS bicycle grips are compatible with most bicycles in market, please order with confidence.