Bosch GBH 4 32 DFR 900W SDS Plus Rotary Demolition Hammer Bosch Blue Line Ansprechpartner. The fastest multi hammer in the 4kg class Wide range of applications in chiselling and drilling work and when working with a core cutter Drills up to 30% faster (25 mm diameter) than other tools in its class Low vibration levels of only 12 m s for less tiring work due to Bosch Vibration Control Product Highlights The GBH 4 32 DFR Professional is the most powerful tool within Boschs SDS plus corded rotary hammer category. Its 900 W motor delivers an outstanding 4. 2 J of impact energy for the fastest chisel removal rates in Boschs SDS plus range. The rotary hammer is designed for durability, featuring a robust metal gearbox housing. Its Vibration Control enables effortless and continuous work in time intensive applications. Equipment & Application This tool is intended for drilling and chiselling in concrete, masonry, wood, and metal. It is compatible with various dust attachments. Performance data Impact rate at rated speed 0 3,600 bpm Rated speed 0 800 rpm