Bosch's GBH 2-21 Professional rotary hammer with SDS-plus technology is the ideal compact entry-level solution for powerful hammer drilling. Its powerful 720 W motor and 2.0 J of impact energy make for effective hammer drilling in concrete of up to 21 mm in diameter. This compact rotary hammer offers professional Bosch hammer drilling performance within reach. Versatility and convincing results are safeguarded by the three-mode rotary hammer for hammer drilling, drilling, and chiselling. This rotary hammer is perfect for use in concrete, stone, and masonry. It is compatible with the following dust attachments for external vacuum cleaners: GDE 16 plus, GDE 68, and GDE 162. Features Powerful 720 W motor and 2.0 J of impact energy for effective hammer drilling in concrete (up.