Brinks Home Security 40mm laminated steel weather resistant Sure-Grip padlock. This lock has a full body weather resistant covering to withstand the elements. The lock body is constructed from laminated steel and has a hardened steel, chrome plated shackle. It is equipped with a brass pin tumbler and a dual lever locking mechanism. The keyway has a sliding cover to keep the cylinder dry and dirt free, making this the perfect padlock for use out in harsh environments. M1 key blank. As a global leader in security-related products and services, the Brinks name is synonymous in top quality merchandise to keep you and your valuables safe.