-Speed trigger with electronic control for exact pilot drilling -Speed preselection with setting wheel -Rotating brush plate for constant power in reverse and forward rotation -Auxiliary handle with depth stop for better control Rated power input : 750 W No-load speed : 0 - 3000 rpm (Drilling range ) Drilling dia. in concrete : 16 mm Drilling dia. in wood : 30 mm Drilling dia. in steel : 12 mm