If you prefer to use a 1/2" drill (with a side handle) for polishing, rather than a rotary polisher, this little adapter allows you to use our velcro backing plate (5/8" x 11). Just screw it to the backing plate. Grip the shaft in your drill's chuck. Simple. Please remember that drill motors are not designed to run continuously. If you are doing a lot of polishing, we recommend buying a tool that is designed for that job. Have a well-balanced tool with a polishing motor will make your job less exhausting and your tools will last longer.