This 20V MAX cordless kit includes a 7" Cordless Rotary Polisher, two 20V MAX 5.0Ah 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 allows for application on cars, headlights, windshields, fiber glass, gelcoat, and for glass-polishing applications. The included 7" backing plate is recommended for most applications.