Material: Metal & Plastic. Color: Blue. Package: 1pcs of Wheel Rim Lock(Other accessories are not included). Size: As the picture show. Please attention: Due to manual measurement , there may be 0.1-0.3cm deviation exist,hope you can understand. Description: - It stops the inner tube moving in the rim and tearing the valve. - Protect against abrasion of inner tube. - Easy to install. - Fitment Rim width: 1.60"1.85" 2.15". About color: There are slight difference between the picture and the real item caused by light brightness,hope you can understand.