Features: EASY FOR MOUNTING: The high quality bell for boys and girls is quite easy to be mounted on most bike like mountain bike and road bike. The handlebars diameter is 22mm. THE SOUND IS CLEARLY AND NICE: The bell is novelty, sounds-loud, clear melodious. Approx 95db decibel sound. Lightweight, compact design, safe and easy to operation. BEST MATERIAL MAKES BEST CYCLING BELL: The bike bell makes of high strength materials that are durable, damage-resistance and lasting, with clear sounds. Can be useful for a long time. PERFECTLY UNIQUE GIFT: Can treat as gifts to friends or your parents, great choice to have a round band instead of a bulbous bell. Beatiful but effective.  Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement                Description: Material: Aluminum Alloy Invisibles Bike Bell  Applicable handle diameter: 22mm Package List: 1x Bike Bell