Griot's Garage BG21 21 mm The BOSS Long-Throw Orbital Achieve fast results with a 21mm long-throw orbit and powerful 900 watt, 7.5amp motor Stay comfortable with extensive energy dampening, double shot rubber grips and ergonomic platypus head and pistol grip Instant start, variable trigger throttle and adjustable maximum speed keep you in control Has premium NSK bearings throughout with a machined CNC'd steel counter balance and counterweight assembly Brush ports enable quick and easy brush changes