The key duplicating machine Q33A adopts vertical feed self-lock fixed hand shank which can realize fixed feeding depth with single hand operation during key duplicating. It is also equipped with guide pin feeding fine adjusting unit. This machine adopts patented four sides (A/B/C/D) rotational gripper which can realize duplicating of keys of different shapes, such as complex and highly safe keys with slots and Israeli tech keys with concave and convex beads. Q33A is equipped with 6 kinds of grippers of different clamping methods, 12V vehicle mounted power supply, wide angle LED lights and ultra-big upper and lower lockers.