Cane Creek Seat Post Spacer 27.2 to 31.8 Black Suspension Seatposts Sizing Shim
These precision made sizing shims are designed to allow a 27.2 seat post to precisely fit a bicycle frame with a 31.8 seat-tube!
(Your Existing Seat Post Should Have The Size of Your Seat Tube Engraved In It!)
Features: 7005 T6 aluminum, black anodized, laser etched with sizing info
3-7/8 inches long