Two modes of operation. Internal double insulation technology. Needle-pin slip clutch for additional user safety. Built-in electronic control circuit maintains constant torque and speed as load varies. 25 percent increase in impact energy (7.37 ft/lbs.). Soft, comfortable, elastomer grip. STANDARD EQUIPMENT: plastic case, side handle, Hex bar wrenches for M4, M5 and M6, stopper, and grease. SPECIFICATIONS: 9.2 Amp, 950 watt motor, drilling speed 240 – 480 rpm. Impact Rate 1,320 – 2,650 bpm. Capacities: Drill bit 1-9/16″, Core bit 4-1/8″.