Wheels Manufacturing Seatpost Shim (Silver) (25.4mm) (30.8mm) - SHIM2-30.8
Wheels Manufacturing Seatpost Shim (Silver) (25.4mm) (30.8mm) - SHIM2-30.8, Wheels Seatpost Shim. Features: Solution for fitting 22.2, 25.4, 27.2 or 30.9mm seatposts to most any seat tube size CNC machined 6061 T6 aluminum Specs: OD:30.8mm ID:25.4mm