1. Ergonomic design, Extended lever, more efficient and comfortable Seat Post Clamp.
2. Aluminum alloy bike Seat Clamp, Sandblasting anodizing surface.
3. Important Size Note: The seat post clamp should match the diameter of the seat tube on your frame and not the diameter of the seat post itself.
4. Color: black, red, low-key luxury, can be matched with any bicycle.