Description
Seat Post Shims Made Of Full Cnc Precision Machining Aluminum Alloy, Anti-Slip..Seat Post Shim 27.2 To 30.4 Easy To Install And Remove, Convenient For You To Use..Seat Post Shims With This Seat Post Tube Adapter, You Can Change The Bicycle Seat Tube To The Size You Want..27.2 To 33.9 Seat Post Shim Suitable For Mtb Bike, Mountain Bike, Road Bike, Etc..Please Check The Outer Diameter Of Your Bicycle Seat Tube. Measure The Inner Diameter Of The Old Clamp. Or Measure The Outside Diameter Of The Seat Tube. Then Make The Right Choi.