Nexify Bicycle Bell - Handlebar Mounted Ring - Lightweight, Easy Installation - Compatible with Kids & Adult Bikes - Thumb Lever Push - Multiple Colors LOUD, AUDIBLE DING - Each bells makes a solid, single "ding" sound so people can know you're passing, on the road, or just having a great ride. EASY INSTALLATION - The handlebar mounted bell clips on quickly and easily and screws down so it won't slide, damage the frame paint, or shift while riding. QUICK THUMB ACCESS - Adjust the placement to fit right beside the hand grip so it's easy to reach and flick without taking your hands off the handlebars. MULTIPLE FUN COLORS - Bike bells come in three fun colors (Black, Gold and Silver) to match bike frames for girls, boys, men and women. DURABLE, LIGHTWEIGHT ALLOY - Made to withstand weather, long rides and years of bell ringing, these mounted bike bells will last a lifetime with care.