The Lumberjack RHD1050 SDS Plus rotary hammer drill is a highly capable all rounder for the serious enthusiast and tradesman alike, this top rated machine boasts a 3 mode function allowing the user the the choice of drilling, hammer action drilling and also chiseling out. The extremely powerful 1050 Watt motor with variable speed creates 5 Joules of impact energy, a no load speed of 1100 rpm and an impact rate of 4600 bpm which basically means that it will drill and cut through the most stubborn masonry, concrete, steel and wood quickly and effortlessly and with it's quality pre set slip clutch, avoids overloading the machine and cuts power if you hit reinforcements, ensuring safe operation for the user.