Variable speed trigger with 2000-5500 OPM Brushless motor provides 50% more runtime Sideways Battery ack to prevent surface scratching Model#: DCM848B Sku#: 1005535905 Internet#: 313856451 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. Brushless motor for efficient performance and runtime 2.1 in. orbit diameter and 5 in. backing plate recommended for most applications Speed range of 2000-5500 OPM for all types of applications Variable speed on the trigger and dial helps to better control the tool during every step of the application Rubber gear case over mold reduces surface imperfections and improves gripping surface Can be held via the front grip or side handle.