Shop for Power Tools at The Home Depot. The New Bosch HDH181-01 18-Volt Brute Tough Hammer Drill Driver with (2) 4.0Ah Batteries, and Charger features a 4-Pole High Performance Motor For maximum power in the most compact size. New Patented Gear Train and Clutch, Enables most compact design in its class and lightest weight. 2 speed gearbox: Optimized torque for screw driving and speed for drilling. Shortest head length in class of 8-3/4 in. long: Better balance and control of the tool for perfect working in tight areas. Made for Heavy Duty Applications and has 700 lbs. of torque.