Description Three groove 3-3V3.15 pulley for use with 3V-section belts. Requires separate SH-type bushing. A Specifications: Datum Diameter: 3.1E: 1 1/4F: 1 1/2H: 1L: 1 1/4O.D.: 3.15Constuction type: BlockBushing: SHWeight: 1.95 lbs