cyclingcolors Bike Shim Reducer : 22.2MM > 25.4MM 28.6mm 24MM 25MM 1" 1 1/8" SEATPOST STEM Ahead Tube Adapter Bicycle (25.4mm (1") (1 1/8"))

Saddle post or stem reduction for the bike (size to choose) Model 22.2mm> 25.4mm: internal diameter 22.2mm, outer diameter 25.4mm (1 "), length 35mm Model 25.4mm (1 ")> 28.6mm (1" 1/8): inside diameter 25.4mm (1 "), outer diameter 28.6mm (1 1/8"), length 35mm Model 24mm> 25mm: inside diameter 24mm, outer diameter 25mm (ring thickness = 0.5mm), length 35mm