Cane Creek Seatpost Shim

Size Diameter of 25.4 to fit Outer Diameter of 26.8, 27.0, 27.2 and 27.2 to fit Outer Diameter of 28.6, 29.4, 30.0, 30.2, 30.6, 30.8, 30.9, 31.4, 31.6, 31.8