electric screwdriver 1 work efficiency,reliable. 2 High accuracy, high rotation speed 3 stable goods for a long ti electric screwdriver ModelXB900 Voltage(V)18,30,36Free speed(r/min)450/800/1200Torque adjustment(N.m)0.15-1.3Applicable screw(mm)M1.2-M3Dimension (mm)4weight(kg)0.5Dimension(mm)36*190