Cane Creek .ST27316 Seatpost Shim, 27.2 I.D. TO 31.6 O.D.

Cane Creek Seatpost Adapter Shim

BNVB Alloy Bike Seatpost Shim, 100mm Length Aluminum Bicycle Reducing Sleeve Seat Post Tube Adapter, Diameter Switch 25.4-27.2mm; 27.2-28.6/30.0/30.4/30.9/31.6mm; 30.9-31.6mm.

SR SUNTOUR SP12 NCX Suspension Seat Post with Protective Cover 27.2X350mm,Black