About this item Package Included: 2 x Bicycle Bells (1* Black Color 1* Silver Color) Size: 21*5.5 CM Suitable for pipe diameter of 22 MM Widely used in golf carts, boats, bicycles, motorcycles, and etc. This model is a metal horn bike bell. The body of the car bell is made of metal, which is of good quality. When you squeeze and release the kneading body, it will make a loud sound. Material: Metal, Rubber.