For extremely precise working: The ASCD 18-200 W4 AS with electronic torque adjustment with 6 levels prevents the tearing of screw heads. Brushless motor with 30% higher efficiency and long durability. 1/4' hexagon socket tool holder for accepting bits and socket wrench inserts. 10% higher torque in left run for loosening the extremely firm screws. Robust full-metal impact gear. Touch-protection at gear head. Compact dimensions 700 screw connections (M18) with one battery charge (ProCORE 4 Ah). Ergonomic and flexible use with side-mounted bit and belt holder. Compatible with Bosch Professional 18 V batteries since 2008 and AMPShare batteries. Maximum work progress with AMPShare 18 V ProCORE batteries: COOLPACK 2.0 technology provides a 135% longer battery life. The latest cell technology and intelligent battery management ensure 87% more power than conventional batteries. Electronic Cell Protection (ECP) protects the battery against overload, overheating and total discharge Best equipp