Dimensions: 4.7"/120mm(Length), 0.87"/22mm(Inner Diameter) <br> Suitable for mountain bike, scooter bike, cruiser, road bike, tricycle bike, or kid’s low-rider bike handle bar within 20-22mm. <br> Easy Installation Tips - For installing easily and quickly, please brush little soap water, detergent water or car wax as lubricant on your handle. (Don't put the grips on the bicycle handle bar so hard when you get the bike grips. Because it is easy to break the grips due to the friction.) <br>