SOFT & DURABLE MATERIAL- This handlebar grip is made of high quality TPR rubber which is durable, non-slip,soft and comfortable for cycling. STANDARD - SIZE GRIPS - Length: 4.7"/120mm; Inner Diameter: 0.87"/22mm. Suitable for BMX Bike, Cruiser, Electric Bike, Folding Bike, Road bike, Mountain bike, Tricycle bike, Scooter bike or Kids low-rider bike handle bar with 20-22mm. ANTI-SLIPPING DESIGN- Mushroom grips designed with classic ridged turbo shape surface, which can get a better anti-slipping and shock absorbing when you are sweating or in the rain. Installation tipsDon't put the grips on the bicycle handlebar directly when you get the bike grips because it's easy to be broken by the friction.