for 1'' to 1 1/8 inch 1/4" Extended Key Gas Engine Pulley Crank Shaft Sleeve Adapter Bushing Sheave and Key

Material:Steel Color: Silver Convert a crankshaft from 1 inch shaft to 1 1/8 inch shaft Works with Gas Engine Crank Shafts to enlarge the crank diameter to fit pulleys, gear boxes etc Part’s specification: Sleeve inside diameter 1” Sleeve outside diameter 1-1/8” Sleeve length is about 3” Sleeve Keyway slot 1/4” Step Key Length is about 2” The sleeve and step key are designed to slip fit on your 1” diameter crankshaft with 1/4” keyway and enlarge it to 1-1/8 diameter with 1/4” keyway.