●It can tighten the handle and prevent the handlebar from coming loose. This is very easy to install ●Ideal for mountain bikes, scooters, tricycles, wheelchairs, etc ●Length and width (approx.): 5.1 x 1.2 inches (13 x 3 cm), error (approx.): 0.4 ●Material: PTE silicone latex material ●Package:1 Pair