This 20V MAX* cordless kit includes a 5-inch Random Orbit Polisher, two 20V MAX* 5.0Ah batteries, charger, and kit bag. The high-efficiency brushless motor of the car polisher delivers up to 75% more runtime over brushed. The variable-speed trigger and dial allow for better control during car, headlight, windshield, and glass polishing applications. The 2.1-inch orbit diameter combined with the included 5-inch backing plate is recommended for most applications.