The Master Lock Excell Laminated Steel Padlock is designed to provide high-level security for outdoor and indoor applications such as sheds, gates, storage units, fences, and containers. This padlock features a patented octagonal boron carbide shackle that offers enhanced resistance against cutting compared to standard hardened steel. The construction includes stainless steel and zinc outer components, ensuring weather resistance and durability in various environments. A dual ball bearing locking mechanism provides resistance against prying attempts, while the recessed rivets offer additional protection against chisel attacks. The lock comes with a 4-pin or 5-pin cylinder for reliable operation and includes four keys to ensure multiple access points or spares are available.