Thanks to the unique new feature of the Bosch Blue GBH 2-28 F Combi Hammer, the machine stops as soon as the drill bit gets stuck in the material. This is possible due to the new drill chuck with rotation control. User benefits: Best in class performance with improved power. Increased user protection with KickBack Control (KBC) to minimize the risk of injury. Ball grommet for preventing cable breaks. Overload clutch for protecting the user and the machine. Stepless speed control for clean drilling. Lock-on button for continuous and fatigue-free work. Active vibration damping with counterbalance mechanism for minimal vibration values. Magnesium gear housing for improved robustness. Rotatable brush plate for equal power in forward and reverse rotation. Forward and reverse rotation for releasing jammed drill bits. Interchangeable chuck for quick changes between drilling with impact in concrete and drilling without impact in wood and metal. Technical data: Rated input power 880 W. Max. impact energy 3.2 J. Impact rate at rated speed 0 – 4,000 min-1. Rated speed 0 – 900 min-1. Weight 3.1 kg. Length 402 mm. Height 216 mm. Tool holder SDS-plus. Drilling Ø concrete, hammer drills 4 – 28 mm. Optimal range concrete, hammer drills 8 – 16 mm. Drilling Ø in concrete with core cutters 68 mm. Max. drilling Ø masonry, core bits 68 mm. Max. drilling Ø steel 13 mm. Max. drilling Ø wood 30 mm. Chiseling: Vibration emission value ah 11.0 m/s². Uncertainty K 1.5 m/s². Hammer drilling in concrete: Vibration emission value ah 11.0 m/s². Uncertainty K 1.5 m/s². Standard delivery: L-Boxx storage case. Keyless chuck 13 mm 2 608 572 212. Depth stop 210 mm. Interchangeable SDS-plus chuck 2 608 572 213. Auxiliary handle.