Steelman SLP9215 3/8-Inch Quick Change Adapter for 1/4-inch Carbide Burr SPEED UP REPAIRS - Saves time by allowing the same low speed buffer tool to be used at multiple points in the repair process 3/8-INCH ADAPTER - Designed to fit into 3/8-inch quick release chucks found on most low speed buffer tools USE WITH 1/4-INCH BURR - Use with the STEELMAN 18241 1/4-inch Carbide Burr DURABLE STEEL - Durable steel construction can stand up to frequent use HEX KEY INCLUDED - Included is a 2mm hex key used to adjust the set screw that holds the burr in place