Impact drill series bosch psb bosch compact expert power 1 010 watt gear variable speed tool holder keyless weight 22 kg idle speed max 2 800 rpm blow count max 47 600 countsmin drill diameter in concrete 20 mm drill diameter in steel 16 mm drill diameter in wood 40 mm power supply mains operation max screw diameter 12 mm included in delivery carry case max bohrfutterspannweite 13 min bohrfutterspannweite 15 number of gears 2