Impact drill series bosch psb power 650 watt gear 1 speed tool holder keyless weight 184 kg idle speed max 3 000 rpm blow count max 48 000 countsmin drill diameter in concrete 14 mm drill diameter in steel 12 mm drill diameter in wood 30 mm special features soft handle speed pre selection power supply mains operation operating voltage 230 v included in delivery depth stop auxiliary handle carry case number of gears 1