1.Full copper movement of motor, with metal protective shell, high speed, high torque. 2.With LED light, provide convenience for working in the darkness. 3.Lengthened switch easy to control. 4.Forward and reverse putter, L and R mean tighten and loosen screws, and the middle gear means turning off the power. 5.Two holding methods, press the PRESS button can change to gun-shaped or straight type. 6.With flexible shaft connecting link, easily
