Problem Solvers 4mm Seatpost Shim 30.9 Seatpost to 34.9 Black

Problem Solvers 4mm Seatpost Shim 30.9 Seatpost to 34.9 Black. Switching frames doesn’t mean you have to switch posts! Use your old posts without worry with the Problem Solvers Seatpost Shims.

Length is 97mm with a 3mm lip totaling 100mm