Purchase vandal resistant / tamper proof stainless steel dee shackle with a sunken hexagonal pin online here. These shackles are mainly used when trying to reduce the chance of the public undoing the shackle, or when the protruding pin on a standard shackle is not acceptable. The shackle can only be opened with a drill bit that most opportunistic vandals or members of the public would not have available to them. However this drill bit can be easily purchased from most hardware stores and so it not a fool proof solution. They are made from 316 grade stainless steel.Follow the link to see our full range of