Seatpost Shim AL 27.2 to 29.0-31.8M Action Adjustable Silver

Two piece slider shim
The "ID" is your post size
The "OD" is the size frame range you want it to fit
Adjustable height
Silver alloy AL-6061

THE PRICES, SPECIFICATIONS AND PHOTOS SHOWN IN THIS CATALOG ARE NOT SUBJECT TO ANY CONTRACTUAL OBLIGATION AND MAY CHANGE DURING THE SEASON