The DEWALT DCH172 Ultra-Compact XR SDS Plus Rotary Hammer has a brushless motor for extreme run time and reduced maintenance. The 2-mode operation allows for either Rotary Hammer or Rotary Only modes. Compact, lightweight and ergonomic design for improved comfort and support during extended operating periods. A bright white LED with a delay feature improves visibility. There is also a convenient tether point so you can keep it secure when working at height. Specifications: Modes: Rotary Hammer, Rotary Only.No Load Speed: 1,060/min.Impact Rate: 0-4,980/bpm.Max. Impact Energy: 1.4 joules.Capacity: Wood 16mm, Concrete 16mm, Metal 10mm, Optimum Drilling Range 4 - 10 mm.Weight: 1.8kg (without battery).