The bike bell well adopts aluminum alloy shell to ensure great ensurance and durability, it matches handlebar with 2.1-2.3cm diameter and easy to mount on bike. With clear and crisp sound, the bike bell is loud enough to increase the safety when you approach others on the way. This bell is suitable for any kind of bikes like ordinary bike, MTB, road bike and more. Features - Color: Green - Material: Aluminum alloy - Voice: 90-100 db - Size: About 4.5 x 5.2 x 3.4 cm (LxWxH). - Fits for most standard sized handlebar of approx. 21-23mm diameter. - Adoption of aluminum alloy, which ensures its durability and long lifespan, - Easy to mount the bike bell on your bike and tighten it just with a screw driver. - Lightweight and fashionable. Adds no extra weight to your and increases the fashion sense of your bike. - Clear and loud sound easily draws people's attention to ensure the safety when you approach others on the way. - Wide application. It is for road bike, MTB, folding bike, cruiser bike, etc. -There will be color difference problem in each batch of incoming goods, subject to actual receipt.