The bosch gbh 8 45 dv professional sds max rotary hammer has a powerful 1500w motor and low vibration it provides 125 joules of single impact energy and low vibration of only 7 mssup2 when chiselling and 8 mssup2 when drilling due to the intelligent triple vibration damping system there is a turbo power function and long lifetime due to the robust metal components and automatic switch lock for continuous chiselling applications the overload clutch protects the user and soft start mean