Check the listing for details. Clesco AS-4FS 1/2" Motor Arbor to 1/2" Threaded Shaft Adapter. Condition: New. Listed at 10.49 USD. Clesco AS-4FS 1/2" Motor Arbor to 1/2" Threaded Shaft Adapter Converts electric motor to Grinder or Buffing machineFits 1/2" Motor ShaftsConverts 1/2" motor shaft to 1/2" Threaded shaftWheel Widths Up To 1 1/16 inO.A.L. 3.50 inWasher Dia. 1.625 inLock on to motor shaft with 2 hex set screws1/2"-20 Right Hand threadHolds Grinding wheels, Wire wheels or Buffing wheels with 1/2" hole ***Combined Shipping ***Place all items in your cart and pay for all items in the same transaction.Shipping will be combined automatically and calculated based on total weight.Choose your mode of shipping during checkout. If purchasing more than 1 of an item or multiple items, priority mail may be less than first-class. ***No refunds of shipping charges after payment has been made. Choose your desired shipping service at checkout. Priority Mail includes insurance to cover loss and damage during shipping.First-Class provides no insurance coverage.