Reduce to fit. A safe way to fit your narrower handlebar to a wider stem. These fine black shims let you use a 22.2mm handlebar on a 25.4mm stem. Simply place one shim on each side at the clamp area and tighten the stem as normal. One shim is 25 mm width and 44mm long and powdercoated in black.These Reducers are perfect if you use our Ruff Cycles Moon Bar and Apehanger Handle Bars.