Cordless hammer drill number of batteries without batteries series milwaukee m12 gear 1 speed tool holder sds plus weight 12 kg idle speed max 900 rpm blow count max 6 200 countsmin drill diameter in concrete 13 mm drill diameter in steel 10 mm drill diameter in wood 13 mm special features impact stop rightleft rotation overload protection power supply battery operation battery voltage 12 v technology li ion impact force 11 joule include