Problem Solvers 3.7mm Shim, 27.2mm Seatpost to 30.9mm

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 100mmProduct Specifics Diameter: 27.2 Diameter: 30.9 Thickness: 3.7 Today's Stock Status 10+ Available to ship in 2-4 Business Days UPC: 708752012851 EAN: Not available Manufacturer Part Number: 1P212-7209A0S ST0237 186380-Q0-L