V-Belt Pulley Bore Type Fixed Bore Material Die Cast Zamak 3 Number of Grooves 1 Bore Dia 3/8 In. Outside Dia 1.5 In. 3L Belt Pitch Dia 1.05 In. 4L A or AX Belt Pitch Dia 1.35 In. 4LA or A Belt Pitch Dia 1.35 In. Fits Shaft Dia 3/8 In. None Bushing Required Construction Solid Set Screw Included Yes For Use With 3L 4L or A Type V-Belts