1. : Our product is silicone material with 3M super glue on the back, which is very strong and extremely resistant to weathering and embrittlement. It can effectively protect bicycle paint and frame materials from damage for a long time. 2. Advantages: Reduce the bumps caused by the between the chain and the frame. In order to better protect the chain and frame, the material is made of silicone, which can be firmly adhered to whether it is a small taper or a special-shaped tube. 3. Easy to Install: All bikes have different geometries, these chain guards are universal and easily fit all bike sizes 4. Quantity: 2 pcs, Weight: 16g (0.035lb), extremely light weight, simple installation, simple and beautiful, and cleanable surface. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.