Polish metalworking projects to a pristine finish by attached this fine buffing wheel to your surface conditioning tool. The Eastwood CONTOUR SCT Buffing Drum is made for metal finishing on numerous surfaces. Simply add a liquid buffing compound and start buffing. Each drum is four inches wide and four inches in diameter. The soft wool felt can be used on straight or curved surfaces, and with a top rate of 4,000 RPM, it will leave metal shining.