Combi hammer series dewalt d25xxx power 1 250 watt gear 1 speed tool holder sds max weight 68 kg blow count max 2 840 countsmin drill diameter in concrete 45 mm special feature electronic speed control dimensions 477 x 245 x 104 cm power supply mains operation impact force 12 joule operating voltage 110 v included in delivery carry case number of gears 1