There are locks. And there's Industrial Grade Security™. American Lock manufactures the latter: padlocks built so rugged they'll scare away most unwanted visitors on sight. And for those intruders foolish enough to try, just let them try to crack through a casehardened, triple-chrome-plated solid steel body, with a boron ally steel shackle, held in place by a double-ball locking mechanism and keyed by a solid brass 6-pin cylinder. Unless they're packing nothing short of heavy artillery, they're going home empty handed.