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:BlueMaterial:Aluminum AlloyPackage Contents:20 * Bicycle bellOnly 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.