Buffing Wheel Mandrel Arbor Adapter For Drill - 1/2 Inch to 1/4 Shank Allows Your drill to accept 1/2 inch arbor hole discs, Converting your drill into a buffer / polisher 1/4" round Shank fits into any electric, cordless drill or drill press Includes 2 wide washers that sandwich the wheels from both sides insuring maximum support Zinc coated solid metal heavy duty construction