Timber Mountain Bike Bell Yew! Description: The Timber Mountain Bike Bell Yew! is designed to alert other nearby trail users of your presence. Using an on/off switch, the bell can be turned on, ringing activated by the bike's motion, or it can be silenced when not needed. The Timber bell offers a friendly way to warn other trail users of your approach. Features: Bicycle bell designed specifically for mountain biking Features an on/off switch for awareness when you need it, and silence when you don't Bolt-on model fits a 35mm bar diameter and with the included shim, it fits a 31.8 to 22.2mm bar diameter Parts are replaceable, including the cable and clapper ringer system Slide the lever down for on, up for off or set it in between for a quieter sound Specifications: Mount: Bolt-on Color: Black