1. The Bike Bell Holder designed suitable for your tag. Attaches to your bike independently suitable for easy tracking if lost or stolen. Excellent function, It looks like a regular bicycle bell. Perfect and unnoticeable. (NOT include tags) 2. Strong sound penetration sound. With New upgrade of bicycle bell, the sound is not only clear and loud, but also stable. 3. Fits 22.2-31.8mm handlebars. Soft and hard pads are included in the package to maximum compatibility. In most cases, hard pads can be used. If the handlebars are too thick suitable for the hard pads, the soft pads can be used. 4. STURDY & . The bike bell is made of plastic, equipped with a powerful spring mechanism. , rust-proof, sun-proof and -proof, ensuring a longer service life. 5. suitable for Bicycle Bell Air-Tag Hidden in Bell, Waterproof Protective Holder suitable for Case Suitable suitable for 22-31.8mm Handlebars Colour:black Material:plastic Package Contents: 1 * Mountain Bike Aluminum 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.