CRISP AND LOUD SOUND: The highly elastic spring of this bike bell can increase the force of the strike and produce a crisp sound of up to approximately 100Db. And the arc-shaped design of this bicycle bell allows sound to travel 180 degrees. You can be clearly heard by pedestrians and passing vehicles when riding on noisy roads or in the dark. COMPACT MINI Q-SHAPED DESIGN: The improved triangular base makes the bike bell more firmly fixed to the bike even on very bumpy roads. Mini Q-shaped design makes and the bicycle more integrated and does not hinder your riding at all. RUST AND PROTECTION: Made of premium quality aluminum alloy and ABS, the bike bell can prevent rust and outdoors or indoors. The bike ring has long service life and can be as good as new after use. EASY INSTALLATION FOR BIKES: The bike bell is suitable for handlebars with outer diameter of 22.2mm-22.8mm. You can easily complete the installation by tightening the screw on the handlebar with a screwdriver. This bike bell can be fixed to different sized bikes, such as mountain bikes, road bikes, kids bikes, city bikes, scooters, beach cruiser bicycles, BMX and other bicycles. The exquisite design is impressive, so it is a for your kids, friends or family. Colour: Black Material: plastic + metal Package Contents: 1 x 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.