Features: Using aluminum alloy, it provides excellent durability and light weight experience. Effectively solve the problem of chain detachment during cycling, ensuring smooth riding on rough and uneven roads. Suitable for 32-38T gear discs. Both road bikes and mountain bikes can be easily installed. Effectively reduce chain friction noise, making cycling quieter and more comfortable. Easy to install and enjoy a convenient user experience. Specifications: Component: Aluminum Alloy Type: ISCG0305/ISCG0305BB Color: Red/01/Black/Blue Size: about 194x200mm/7.64x7.87inch Package Includes: 1pc Bike Tooth Plate Chain Stabilizer note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.