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