Includes 11 Amp Polisher/Grinder, 8 Inch Backing Pad, 36 Grit Disc Pack, and 24 Grit Disc Pack, Grinder features adjustable dial speed control and lock-on switch for comfort during extended use, Backing pad is a one-piece unit that features a soft foam backing and a molded-in threaded insert to mount directly to the sander, Sanding discs have hook and loop style backing for easy installation and removal.