Cordless hammer drill number of batteries without batteries battery management replaceable battery series milwaukee m12 gear 1 speed tool holder sds plus weight 177 kg idle speed max 800 rpm blow count max 5 350 countsmin torque max 40 nm drill diameter in concrete 10 mm drill diameter in steel 8 mm drill diameter in wood 10 mm special features impact stop rightleft rotation soft handle overload protection power supply battery operation