Style design agrees with the principle of the ergonomic rod, easy to use, does not get tired easily, it can solve the stubborn screws on the air filter, the high -end brewing panel or etc etc . The handle is in pp, non -slip design in double plastic, very comfortable to use & nbsp; Designed according to human factors engineering, it reaches maximum torque & nbsp; & nbsp; The handle of the screwdriver is specially designed according to engineering of human factors and is comfortable and practical to use & nbsp; Professional hand screwdriver is made of vanadium chrome steel, a stronger torsion in use
