Ratchet wrench is a manual screw tightening tool, single-ended, double-ended multi-specification movable shank ratchet torx wrench (fixed hole). It is connected by the main plum blossom sleeve of different specifications and sizes and the secondary plum blossom sleeve by the female and yang keys of the articulated key. Because a plum blossom sleeve has two specifications of plum blossom-shaped through holes, it can be used for the tightening of two specifications of screws, thus expanding the scope of use and saving raw materials and man-hour costs. The adjustable wrench handle makes it easy to adjust the angle of use of the wrench. This kind of wrench is used for the tightness operation of screws, and has the characteristics of strong applicability, easy use and low cost.