1.SIZE Classic looking small size bicycle bell. 2.MATERIAL: The bike bell is made of high quality alloy material, sturdy and durable, anti-rust and anti-aging, stable plastic base makes the bike bell has a long service life. 3.EASY TO INSTALL: This bicycle bell comes with a durable mounting bracket, it can be installed on bicycle handlebars with an outer diameter of 20-30 mm, just snap onto the bicycle handlebars and tighten the screws. 4.APPLICATION: Our bike bell is suitable for road bikes, mountain bikes, sport bikes, cruiser bikes, tricycles, folding bikes, , children's bikes and so on. It is a perfect gift for bike lovers. Style: Classic Mounting Type: Handle Colour:black Material:alloy Size:7.3 x 3.5 x 3.5cm 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.