Dodge® Single Groove Fixed Bush Sheave, Light Duty Type 3B, 1/2 to 1-1/2 in Bore, 3.95 in OD, 3.55 in (A/4L)/3.95 in (B/5L) Pitch Diameter, 29/32 in Face Width, MBL Bushing, 1.438 in Overall Length, For Use With: A-B, 4L and 5L Cross Section V-Belts, Cast Iron