This 20V MAX* cordless kit includes one 7 in. rotary polisher, two 20V MAX* 5.0 Ah batteries, charger and kit bag. The high efficiency brushless motor delivers up to 75% more runtime over brushed. No-load speed of 800-2200 RPM with the variable speed trigger and dial allow for use in car, headlight, windshield, fiber glass, gelcoat and glass polishing applications. The included 7 in. backing plate is recommended for most applications.