Details:  Quick release design, easy installation Condition: 100% brand new Color: Black/Red (As Picture Show) Material: Aluminium Alloy+Plastic Suitable handlebar diameter: 22mm-31.8mm Suitable for: Xiaomi Mijia M365 Scooter and Ninebot Electric Skateboard Scooter. (also suitable for other scooters and MTB Bikes)  Package Contents:  1*Skateboard Bell 2*Rubber Rings  Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.