Problem Solvers 0.7mm Shim, 30.9mm Seatpost to 31.6mm

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 Due to the ultra-thin spec of this shim and varied manufacturing tolerances of frames and seatposts, we can&';t guarantee compatibility with all brands on the market Be gentle and use grease