Top performance with 20% less vibration. High drilling rate and 20% higher chiseling power than other rotary hammers in its class. 20% less vibration than other hammers in its class for more comfortable working due to Bosch Vibration Control. Quick change chuck for fast changes between drilling with impact in concrete and drilling without impact in wood and metal. PERFORMANCE DATA: Impact rate at rated speed: 0 ? 4,000 bpm. Rated speed: 0 ? 900 rpm. ADDITIONAL DATA: Rated input power: 800 W. Impact energy (according to EPTA 05/2016): 3.1 J. Weight: 3.5 kg. Tool holder: SDS plus. DRILLING RANGE: Drilling dia. concrete, hammer drill bits: 4 ? 28 mm. Opt. appl. range concrete, hammer drill bits: 12 ? 18 mm. Max. drilling diameter masonry, core cutters: 82 mm. Max. drilling diameter in metal: 13 mm. Max. drilling diameter in wood: 30 mm. TOTAL VIBRATION VALUES (Hammer drilling in concrete): Vibration emission value ah: 14.5 m/s?. Uncertainty K: 1.5 m/s?. TOTAL VIBRATION VALUES (Chiseling in concrete): Vibration emission value ah: 9.7 m/s?. Uncertainty K: 1.5 m/s?. Hammer drilling in concrete: Vibration emission value ah: 14.5 m/s?. Uncertainty K: 1.5 m/s?. Chiseling in concrete: Vibration emission value ah: 9.7 m/s?. Uncertainty K: 1.5 m/s?.