For bits 1/4 in. in diameter or less, speed adds to productivity and quality of performance. This 0-4000 RPM drill performs with power to spare. 1/4 4000 Magnum,Powerful 7.0 amp motor 0 to 4000 rpm variable speed control ,Heavy-duty keyed chuck ,All metal gear case and diaphragm ,8 ft. 3-wire Quik-Lok® rubber cord for easy storage and field replacement ,Ergonomic tactile grip and two finger trigger for user comfort and balance , ,Voltage 120 AC ,Chuck Size 1/4 in. ,Amps 7.0 ,No Load Speed 0-4000 RPM ,Chuck Type Keyed ,Spindle 3/8 in.-24 ,Gear Train Single ,Cord Type 8 ft. Quik-Lok ,Construction Type Grounded ,Trigger Lock On ,Spindle Lock No ,Soft Grip Handle Yes ,Length 10-13/64 in. ,Tool Weight 3.8 lbs. ,INCLUDES ,Chuck Key with Holder