Advantages The most powerful rotary hammer from Bosch! ? Top performance when drilling and chiselling thanks to the 1.700 watt motor and 19 joules of single impact energy ? Exceptional durability thanks to robust metal components ? Automatic lock-on switch for highest user comfort during continuous chiselling applications Rated input power* 1,700 W Impact energy* 19 J Impact rate at rated speed 1,750 ? 2,150 bpm Rated speed 0 ? 220 rpm Weight 11.5 kg Tool dimensions (width) 120 mm Tool dimensions (length) 600 mm Tool dimensions (height) 312 mm Tool holder SDS max Drilling range Drilling dia. concrete, hammer drill bits* 12 ? 52 mm Opt. appl. range concrete, hammer drill bits 30 ? 50 mm Drilling dia. concrete, breakthrough drill bits 80 mm Drilling diameter in concrete with core cutters 150 mm