Dodge® Single Groove Fixed Bush Sheave, Light Duty Type 1B, 1/2 to 1-1/2 in Bore, 3.15 in OD, 2.75 in (A/4L)/3.15 in (B/5L) Pitch Diameter, 29/32 in Face Width, MBL Bushing, 1.891 in Overall Length, For Use With: A-B, 4L and 5L Cross Section V-Belts, Cast Iron