1, simple and lightweight, conducive to the belt and application

2. There are six surfaces between hexagon socket screw and wrench, which are fully compressed and not easy to be damaged.

3, can be used for turning the screw in the deep hole.

4. The warp and length of the wrench determine its twisting force.

5, can be used for turning very small screws.

6, very easy to manufacture, cost is cheap.

7. Both sides of the wrench can be applied.