Noram Heavy-Duty Pulley Clutch Noram 160021, 1762055 (255-635)

  

1 bore ball bearing style hub for smooth running. 1/4" keyway, 4" OD pulley. Fits A or B belts. For 1/2" or 5/8" section belts. One piece machined steel pulley and drum to withstand high shock loading, heavy-duty.