Product name:Bicycle Bell Product Size about:4.5*3.8*2cm/1.77*1.49*0.78in Inner diameter: 22mm/0.86in Product color: As shown in the figure Product Material: Aluminium alloy + ABS product features: 1. LOUD AND CLEAR: This bike bell is designed to produce a loud and clear sound, ensuring that pedestrians and other cyclists on the road can easily hear you. 2. Smooth and Invisible: This bell has an invisible design that blends in perfectly with the handlebars of your bike, adding style without sacrificing functionality. 3. DURABLE AND LIGHTWEIGHT: This bell is made of high quality aluminium alloy, which is both durable and lightweight, ensuring that it can withstand the rigors of cross-country and road cycling, while keeping the weight of your bike to a minimum. 4. EASY TO INSTALL: It is suitable for 22mm/0.86in ID bike handlebars, the mounting system of this bell is simple and secure, it can be easily installed on most handlebars, so you can quickly equip your bike with a reliable and effective sound signalling device. 5. FOR YOUNG AND OLD: Whether you are an experienced cyclist or a young rider, this bell is suitable for all ages and types of bikes, making it a versatile accessory for cyclists. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact mewe will give you some suggestion, but it is for you reference only. Shipment includes: 1 pc Bicycle Bell