Why are the plum blossom wrench to bend
The rotation angle of the plum spanner is limited, such as 10 bolts are distributed at the same time on the plane, and the other 9 bolts are likely to be distributed inside the rotation radius of the wrench, which blocks the wrench to remove the bolt. So the two wrench generally bent, out there for people operating space.
The structure is convenient for dismounting bolts and nuts assembled in the hollow space and can provide an operating gap for fingers to prevent chafing. In addition, tightening and similar operations, large torque can be applied to the bolt or nut with a plum wrench.
The two ends of the plum spanner are in flower ring shape, and the inner hole is made of 2 hexagons which are mutually concentric and stagger by 30 deg. Many Plum wrenches have elbows, and the common elbow angles are between 10 and 45 degrees. From the side view, the rotating bolts and the handle parts are staggered.