BAZHOU Suitable for every handlebar with diameter 21-22.2mmWhether it is mountain bike, race bike, city bike, mountain bike, e-bike or scooter - our bike bells for kids and adults fit all bike handlebars. Copper Alloy Corrosion-Resistant ShellMade of high-strength copper alloy and ABS, it is sturdy and durable. With good rust resistance, it can withstand any weather conditions, whether you are an off-road MTB or a daily commute on a city bike. Small size and easy to install The bicycle bell is small and unobtrusive, and can be adapted to various styles of bicycles. This bicycle bell can be disassembled in 30s. Just use the included wrench to tighten the screws on the handlebar. Unique RingtonesThe sound of bicycle bell is not as harsh as other bells, it has the characteristics of clearer sound and very beautiful echo, so that you don't have to worry about passersby being scared, so that you can avoid all embarrassment. Delivery Quantity: 2pcs, Package Contents: Only the above package contents, excluding other products. Size: 3.2 x 3.2 x 4.8 cm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) Colour: Black (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)