Super bell sound: The volume of this bicycle bell is super large, which can be clear and eye-catching in a noisy environment to your riding . Wide application: not only suitable for mountain bikes, but also for adult bicycles to meet the needs of more users. Invisible design: The horn adopts invisible design, which is integrated into one, will not affect the beauty of the bicycle, and is easy to install and disassemble. Riding essential equipment: This is a riding essential equipment, providing convenience and improving the factor of riding. Mini compact: The compact size makes it easier to carry and install, and does not bring any additional burden to riding. Nice Bell. It's a nice decoration for your bike. Also great as a gift. Colour:Blue Material:Aluminum Alloy Package Contents: 20 * Bicycle bell Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.