Makita's 7-Inch Electronic Polisher-Sander is a favorite among automotive and marine enthusiasts for polishing and sanding. The 9227C combines 10 AMP power and variable speed control with a pre-set maximum speed dial. The result is fast and powerful polishing for clearcoat finishes, and more. It can also be easily converted to a sander. 10 AMP Power with Variable Speed Control. The 9227C is powered by a 10 AMP motor with variable speed that delivers 600 - 3,000 RPM, with electronic speed control to maintain constant speed under load. The soft start feature ensures smooth start-ups, and the lock-on button is designed for continuous use at one speed.