Bosch gbh8 45d sds max rotary hammer drill uses the 1500w motor at its heart gives the trade superb durability and top performance during drilling and chiselling applications this bosch hammer drill uses an automatic switch lock for the best convenience in continuous chiselling applications plus the safety overload clutch protects the user and the machine the gbh8 45d has an easily adjusted speed controller allowing total optimised adjustment to suit most applications and a soft start feature