Features: *1. Made of aluminum alloy, lightweight and high strength, non-slip.? *2. CNC cutting technology, fine workmanship, anodized surface, making the color bright.? *3. Easy to install and remove, wear-resistant and compression resistant, no scratch on metal parts.? *4. 31.8/34.9mm are available.? Description:? *1. Material: aluminum alloy *2. Color: black, colorful (as shown) *3. Dimensions: inner diameter 31.8mm/34.9mm *4. Weight: about 23.5g *5. Uses: mountain bike Package Content: 1x Seat Clamp? Note: *1. All pictures are professionally color-coded, but due to the difference of ambient light and display equipment settings, there may be some deviation between the pictures you see and the objects themselves, please understand. *2. The data is measured manually, and there may be some deviation, but it does not affect the use.