Bosch 06112A3070 Professional Rotary Hammer with SDS-Plus  The Bosch GBH2-26 Professional Rotary Hammer has an impact rate of up 4000 bpm and a speed rating of 900rpm. This heavy-duty machine is suited to anyone working in the Construction, Electrical or Plumbing trades.  Features:   Ball grommet for preventing cable breaks  Rotating brush plate for equal power in forward and reverse rotation  Overload clutch to protect the user and the machine  Forward/reverse rotation for dislodging jammed drill bits  Continuously variable speed control for clean drilling starts  Locking button for continuous and fatigue-free work  Improved performance for a fast drilling rate and high chiselling removal rate  Reliable and robust with long lifetime due to high-quality components  Wide range of applications for drilling, hammer drilling and chiselling   Comes with:   Carrying case  Auxiliary handle  Depth stop   Specification: Rated power input: 830 W Impact energy: 2,7 J Impact rate at rated speed: 0 - 4.000 bpm Rated speed: 0 - 900 rpm Bit holder: SDS-plus Drilling dia. concrete, hammer drill bits: 4 - 26 mm Opt. appl. range concrete, hammer drill bits: 8 - 16 mm Drilling diameter in concrete with core cutters: 68 mm Max. drilling diameter masonry, core cutters: 68 mm Max. drilling diameter in steel: 13 mm Max. drilling diameter in wood: 30 mm Hammer drilling in concrete: Vibration emission value ah: 17,5 m/s_ Uncertainty K: 1,5 m/s_ Chiselling: Vibration emission value ah: 14,0 m/s_ Uncertainty K: 1,5 m/s_ Weight: 2.7kg