5/8" Bore
3 1/4" pulley diameter4 1/4" outside diameterA or B beltEach clutch includes an instruction sheet explaining proper installation methods and maintenanceKeyway: GroovedNo adjustment requiredNon-directional, inboard or outboardOilite bearingsSintered metal shoes and stainless steel garter springWeldless constructionBore Size5/8"Keyway Width3/16"