1. Hit hard with a hammerScrew the screw with a wrench, and then hit the knob of the wrench with a hammer, knock twice w

1. Determine whether the physical properties of the product can consider the application requirements, such as the compr

Measuring tools can be divided into three categories according to their main USES:1. Standard measuring tools.A measurin

1. The type and specification of the word screwdriver are expressed as the total width of the cutter head * boring cutte

1. It#39;s very simple and lightweight.2. There are six surfaces in the middle of the socket head screw and wrench, whic

1. Choose the right products2. Reduce friction resistance3. Proper operation steps4. Safety torque refer to the table

1. Firstly eliminate the silt with broken screws and cut off the surface layer. Then use the center gun to kill the cent