This Peterson Gilmer pulley is a billet aluminum 21-tooth pulley machined to tight tolerances from aircraft-quality aluminum for concentricity and accurate fit. It accepts a 1" wide belt, measures about 1.020 inches wide, and fits a 1-inch bore with a 1/8-inch keyway. Use where a precisely machined pulley and correct belt width are required for reliable drive-belt installation.
Peterson Fluid Systems Pulley 21 Tooth 1 Width 1 ID 1/8 Key