Made of premium rubber, it is wear-resistant and tear-resistant.It has high flexibility and adaptability, which can protect the crank chain from being scratched.Suitable for most bicycle chainrings on the market.The protector can give you 360-degree full protection.Item Name: Bicycle Crankset ProtectorsMaterial: RubberQuantity: 2PcsFeatures: Wear-Resistant, Tear-Resistant, 360-Degree Protection, DurableSize: 4.3cm x 3.4cm x 1.8cm/1.69" x 1.34" x 0.71" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:2 x Bicycle Crankset Protectors