Bosch Gbh 4-32 Dfr 4Kg 3 Function Sds+ Hammer With Extra Chuck-110 VoltsRated power input: 900 W Max. impact energy: 4.2 J Impact rate at rated speed: 0 – 3.600 bpm Rated speed: 0 – 800 rpm Weight: 4.7 kg Toolholder: SDS-plus Drilling diameter in concrete with hammer drill bits: 6 – 32 mm Optimum range of applications in concrete with hammer drill bits: 14 – 25 mm Max. drilling diameter in masonry with core cutters: 90 mm Max. drilling diameter in steel: 13 mm Max. drilling diameter in wood: 32 mm Forward/reverse operation Electronic Overload clutch Bosch SDS System