Loud Sound: bike bell has a and clear ding. Small bell has loud sound to warn the walkers and passing vehicles that you're up behind them, enough to get attention. Enjoy classic bike bell . Easy to Install: Insert the appropriate metal band around the handlebar into the two slots of bottom, then tighten the top bolt until it's snug but please not too tight or the bike bell can't ring. Build: Brass alloy bicycle bells guarantees clear loud sound and sturdy quality. Soft silicone layers, keeps the bike bell stay in place and your bike from scratching. Premium-High Quality: Made of premium copper which is anti-rust and anti-aging. With retro design, high strength springs and light strong alloy bracket .<br><br>size: outer wall width 2.8 x Diameter 2.2cm Material: copper colour: black<br><br>Package Contents: 1 x Bicycle Bell 2 x tab<br><br>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.