The Master Lock Excell® No. M5EURTRILF Laminated Padlocks feature a 52mm wide laminated steel body for maximum strength and reliability, and are surrounded by stainless steel and zinc outer components for weather resistance. The 9mm diameter octagonal shackle is 38mm long and made of Tough-Cut™ boron-carbide, 52% harder than hardened steel, offering maximum resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual locking ball bearings provide maximum resistance against prying and hammering. The Limited Lifetime Warranty provides peace of mind from a brand you can trust. Features: Tough-Cut octagonal boron-carbide shackle is 50% harder than hardened steel. Dual-Armor protection: 52mm laminated steel core for strength surrounded by stainless steel & zinc outer components for weather resistance. The Master Lock Excell No. M5EURTRILF Laminated very high security padlock is best used for storage units, sheds, garages, fences and more. The package contains 3 padlocks and 4 keys, key lock is the same for the three padlocks. The Limited Lifetime Warranty provides peace of mind from a brand you can trust. The Master Lock Excell Laminated Steel Padlocks are made with cutting-edge technology to deliver unprecedented security. They feature tough-cut patented octagonal boron carbide shackles, which are 50% tougher to cut than hardened steel, and dual ball bearing locking mechanisms for maximum pry resistance. The laminated steel padlocks are built for strength, with stainless steel and zinc outer components for exceptional weather resistance. They have either a precision 4-pin or 5-pin cylinder and recessed rivets that are chisel resistant. Supplied with 4 keys and a Lifetime Warranty against mechanical failure. Suggested uses: gates, sheds, storage units, fences, containers and chains.