Quick Release Bicycle Seatpost Clamp,31.8mm Black

The seatpost clamp should match the diameter of the seat tube on your frame and not the diameter of the seatpost itself. 31.8mm Seat Post Clamp fits on the out diameter 30.2mm~32.1mm bike seat post 34.9mm Seat Post Clamp fits on the out diameter 33.5mm~35.2mm bike seat post Hollow design ,Retain strength, lightly and solidly Ergonomic design,Extended lever,, Weight: 0.0881849048 pounds, Manufacturer: yueer