What Kind Of Chain Is This? Hex chain is a high alloy chain drawn in a six-sided (hexagonal) shape and heat-treated to be extremely hard. The hex shape does not allow bolt cutters to get a proper bite, which prevents them from cutting the chain. It is ideal for securing equipment or portable tools at a jobsite or for general purpose security. Instead of being hardened merely on the surface (aka "case-hardened"), this chain is hardened all the way through to 53-58 HRC. This means a would-be thief works just as hard to get through the middle of the chain as he does the outside of the chain. The blue color you see is actually the rust-resistant finish, which helps the chain hold up well in the elements.
What About The Lock? The padlock body is made from Stainless A304 material with a magnesium shackle. The lock body extends up to protect the shackle from allowing bolt cutters to access it. It comes with two double notch cut, dimpled and reversible keys that can not be removed unless the lock is closed and secure. This is a beefy padlock, and far from a standard economy lock you might find at a local hardware store.