The crime safe mesh is stainless steel 304 or 316 grade . First, it features high tensile strength. Thus when thieves want to kick it out, even kicking the crime security mesh repeatedly and forcefully, they will only injure themselves and can not break through the mesh. Second, it features high shear resistance. It will be incredibly difficult to cut off the mesh. You can take a machete and hack away at or stab our mesh repeatedly and forcefully. Or straining with a hacksaw saw, mesh will not be destroyed, at most the black coating is scraped off. This time, you will get the same failing results and the crime safe mesh will remain intact. Therefore, when thieves try to get into your house and the only result is failure. Because the thieves must quickly and quietly get in your house. While the hard mesh will give them a hard time.