What can I say? That part is hard, solid, has thick, clean welds and makes otherwise a solid, high-quality impression. Crack with the bolt cutters? Forget it! Decompose with the release witch? Possibly, but takes awhile ne gaaaaaanze and costs a lot of cut-off wheels ;-). Lockpicking? No Idea. However, since it has no standard-cost-closing system, it will also have professionals difficult. So absolutely suitable and sufficient to secure higher values for the cellar.