Description Five groove 5-3V6.50 pulley for use with 3V-section belts. Requires separate SK-type bushing. A Specifications: Datum Diameter: 6.45E: 3/8F: 2 5/16H: 1/16L: 1 7/8O.D.: 6.5Constuction type: BlockBushing: SKWeight: 10.65 lbs