Description Brute Force's patented, nonconductive, rotationally molded body is designed to absorb torque and vibration for comfortable use. The one-piece base and motor housing ensures the machine’s durability, longevity, and safety. All Brute Force Series rotary floor machines have a triple planetary gear system for years of trouble-free use and a 1.5 hp motor to handle the most demanding jobs. Available in both 17” and 20” models.