Cane Creek Seatpost Shim (Black) (27.2mm) (30.9mm) - .ST27309
Cane Creek Seatpost Shim (Black) (27.2mm) (30.9mm) - .ST27309, Shim for road bike or mountain bike seatposts. Inner diameter is 27.2mm, while Outer diameter is 30.9. Shim is 3-7/8" tall, machined aluminum, black anodized, and laser etched with sizing info.