Flat Face Idler Bearing Type Needle Roller For Belt Type Back Side of V-Belts Flat Timing Bore Diameter 1 in Face Width 1.063 in For Belt Trade Size Not Applicable Outside Diameter 4.375 in Pulley Material Cast Iron Face Diameter 4 in Face Type Flat For Use With Drive Tighteners Hub Diameter 1 7/8 in Length through Bore 1 1/4 in Material Fabrication Cast