Flat Face Idler, Bearing Type Needle Roller, For Belt Type Back Side of V-Belts, Flat, Timing, Bore Diameter 1/2 in, Face Width 0.563 in, Outside Diameter 1.75 in, Pulley Material Cast Iron, Compatible Tightener Shaft Grainger Part Number 6AGL5, Face Diameter 1.375 in, Face Type Flat, For Use With Drive Tighteners, Hub Diameter 1 1/4 in, Length through Bore 7/8 in, Material Fabrication Cast, Maximum Radial Load at Speed 665 lb @ 100 RPM