Astro Tool 30570 20V 7" Brushless Variable Speed Rotary Polisher With 2 Batteries is a professional duty cutting-edge brushless 20V polisher made possible by the latest technology 2020 has to offer. Made to maximize power and battery efficiency, this adjustable tool has 6 soft-start speed settings from 400-2,200RPM. Its brushless design ensures compact lightweight power without needing to worry about any brushes wearing out. Perfectly balanced at the user's grip, the 30570 with its battery attached weighs even 1LB less than the most popular corded rotary polishers. This kit includes two 4.0Ah batteries and charging dock for zero downtime and a hay bale style forward handle for a vertical or horizontal hold. Specifications: Motor: Brushless DC-20V, Battery: 4.0Ah x 2, No Load Speed: (soft start) 400, 760, 1,120, 1,480, 1,840, 2,200 RPM, Weight: 5.86lbs w/ battery, 4.1lbs tool only, Arbor Size: 5/8"-11, Pad Dia.: 180mm (7") Switch Type: Slide Switch w/ lock