Hammer drill series einhell th rh power 900 watt gear 1 speed tool holder sds plus weight 43 kg idle speed max 850 rpm blow count max 4 100 countsmin drill diameter in concrete 26 mm special features rotation stop impact stop overload protection dimensions 350 x 95 x 250 cm power supply mains operation impact force 3 joule operating voltage 230 v number of gears 1