MFORCE - New Two-Piece D-31 Motor. New two-piece D-31 motor delivers power, efficiency and serviceability in a more compact size. Dual ball bearings, precision balancing and a refined high-grade field magnet guarantees maximum performance. All Metal Gear Transmission (0-400 / 0-1,300 RPM) - features a rugged 3-stage, 13-planetary gear system providing smooth, efficient power for the most demanding applications and extended durability. Exclusive Shift Lock Drive enables one-touch, quick shifting from "drill" to "driver" mode for increased operator efficiency. The Shift Lock Drive System locks out the clutch for superior drilling. 2.6 Ah Ni-MH Batteries for greater capacity and longer run time - no memory effect and environmentally friendly, Ni-MH Batteries provide unmatched performance. Locking/racheting chuck for secure tightening of bits and unmatched grip strength Large spindle bearing ensures positive, on-center drilling performance. Variable speed trigger for precise operator control. Ergonomically designed rubberized grip enhances comfort and increases operator control. Externally accessible brushes for serviceablility and longer tool life. Includes (2) 12V Ni-MH Batteries, Multi-Voltage Charger & Case. Contains: - 2 ea. Battery - DC Charger - Phillips/Slotted Bit - 3/8 Keyless Chuck - Battery Cover - Plastic Tool Case Specifications: Capacities: Steel-1/2" / Wood-1" No Load Speed: Low 1-400 RPM / High 0-1300 RPM Maximum Torque: 310 in. lbs. Watt Hours: 31.2 Battery: 12VDC (2.6 Ah) Overall length: 9-9/16" Net Weight: 4.4 lbs.