The content of the web site itself, apart from "providing equipment", ought not to be a problem in any legal sense. "Providing equipment" might be -- most jurisdictions would consider the items in question to be "housebreaking tools" with no ready legitimate purpose other than, well, their designed purpose, and such tools are generally under strict control (locksmithing permits/licenses are normally required, as is proof of bond) -- as would providing sufficient information to easily fabricate such equipment. (Filing a bit of sheet metal is one thing; if the provided information is such that it would take a full-blown machine shop and a practised hand to take advantage of the detail, then it would probably fall under the "impractical information" umbrella as far as most people are concerned -- it would be cheaper to become a locksmith and buy the things.) Again, from a strict legal perspective, a "we will not ship to ..." or "we will only ship to ..." clause would take the service provider off the hook. That being said, freedom of the press belongs, as it always has, to the fellow that owns the press, so there is no reason why a hosting provider should feel obliged to provide a forum for any site or service it thinks might encourage illicit behaviour of any sort (including rhapsodizing about cats -- something I think more hosting providers should be far more wary of).