The new Massi Clamp for 31.8mm Black Seatpost stands out for its easy installation and economical price. Massi brings us a matt black clamp with a simple and elegant design but at the same time effective. Its structure helps greater stability and rigidity of the post. The clamp has an Allen anchor screw for a perfect union, better distributing the pressure. It incorporates the new Massi M logo in white on the front. If you are looking for security and compatibility with your 31.8mm seatpost, this model is a great choice, at a very affordable price. Product: Seatpost Clamp Material: Aluminum Closure: Screw Weight (g ±3%): 26 Diameter: 31.8mm