Angle grinder single hand angle grinder series bosch gws bosch professional power 1 000 watt disc diameter 125 mm weight 16 kg power supply mains operation idle speed max 11 000 rpm functions derusting grinding roughing brushing separating features spindle lock handle safety feature protective casing operating voltage 230 v tool holder m 14 included in delivery allen key clamping nut transport box auxiliary handle two hole spanner