Dewalt DCM848B 20V Max* Xr® 5 In. Cordless Variable-Speed Random Orbit Polisher (Tool Only)Dewalt DCM848B This 5 in. Random Orbit Polisher features a brushless motor for efficient performance and runtime. The variable speed trigger and dial allow for better control during car, headlight, windshield, and glass polishing applications. The 2. 1 in. orbit diameter combined with the included 5 in. backing plate is recommended for most applications. Features Brushless motor for efficient performance and runtime 2. 1 in. orbit diameter and 5 in.