The Matco Tools12V Cordless Infinium Screw Gun, No. MCL12S, features a high torque drivetrain with 12-speed adjustable clutch. It has a two-speed design for multiple applications: 400 and 1700 rpm for low and high speed. It also has a precise variable-speed trigger with one hand forward/reverse switch. Its bit retainer holds both 1" regular bits and power bits. According to the company, its replaceable carbon brush motor allows user to easily service brushes and improve the life of the tool. The tool includes a motor screen to protect it from debris.