Precision multi tool series proxxon micromot power 40 watt weight 023 kg battery voltage 18 v power supply mains operation idle speed max 20 000 rpm functions drilling milling grinding polishing included in delivery allen key mains supply 12v max 40w with electronic speed control 5000 20000 rpm incl 6 collets 1 0 1 5 2 0 2 4 3 0 und 3 2 mm