Hexagon wrenches are rarely seen in life, but they are mostly used in factory production and mechanical products. Each has its own advantages. Cross-shaped screws have moderate head strength, short head and easy embedding. Tools are easy to find, but when tightened, the strength of the head is not as high as that of the hexagon. And it's generally cheaper. If you have seen the wrench of the hexagon socket screw, you will know that the hexagon socket can bear great torque, and the booster sleeve is often used in the actual tightening process. It can be seen that the head strength of the hexagon socket head screw, while the general Phillips screwdriver may be damaged. Finally, the strength grade of hexagon socket head screws is generally above 8.8, while the strength grade of crosses is generally not high. It's usually 4.8. The strength is only half that of a hexagon.