Cordless hammer drill cordless combi hammer number of batteries without batteries series milwaukee hd gear 1 speed weight 35 kg idle speed max 1 400 rpm blow count max 4 200 countsmin drill diameter in concrete 24 mm drill diameter in steel 13 mm drill diameter in wood 30 mm special feature impact stop power supply battery operation battery voltage 18 v technology li ion impact force 24 joule included in delivery without charger or battery