Optimum 21MM Dual Action Polisher DA21EM3 Optimum Professional Polishers 21MM Throw One Year Warranty In-House Service & Repairs Parts & Accessories In Stock Compatible with our 6 Inch & 5 Inch Backing Plates The new more powerful, smoother, and quieter long throw Optimum DA21EM3 Dual Action Polisher represents one of the latest advancements in machine polishing technology. With 1,100 Watt of power, it cuts faster, runs smoother and much quieter than any other orbital polisher with an orbit (throw) of 21mm, this dual action polisher has evolved to become a leader in efficient cutting power while still maintaining the safe operation expected from a DA polisher. The new Optimum DA21EM3 is powered by a new, highly powerful and efficient motor that produces the torque required to quickly remove heavy paint defects while maintaining the lowest noise levels and smoothest action you will find on a dual action polisher! The new Optimum DA21EM3 is manufactured using only the highest quality parts. The backing plate features ventilated cooling channels to help reduce heat transfer and the machine also includes an easy access panel for services and replacing carbon brushes. Compatible with our 6 inch and 5 inch backing plates.