Description Four groove 4-3V4.12 pulley for use with 3V-section belts. Requires separate SH-type bushing. A Specifications: Datum Diameter: 4.07E: 15/32F: 1 29/32H: 3/16L: 1 1/4O.D.: 4.12Constuction type: BlockBushing: SHWeight: 3 lbs