Bike Seat Post Clamp Fit for 40/41mm, Aluminium Alloy Bicycle Quick Release Seatpost Collar Seat Post Clamp for Folding Bike,MTB,Road Bike

About this item 41MM seat tube clamp is suitable for 33.9MM seat tube,40MM seat tube clamp is suitable for 31.8MM seat tube. The diameter of the sitting pipe will be marked below most of the sitting pipe,which can be seen when pulled out. Easy installation,Convenient and quick disassembly. High quality aluminum alloy, durable.