The Master Lock ExcellLaminated 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.The Master Lock M15EURDLF has the following specifications:64mm Excelllaminated steel padlock - 38mm Octagonal boron carbide shackle, 11mm diameter - 5-pin tumbler cylinder - dual ball bearing lockingAdditional Information:Padlock Type: LaminatedBody Width (mm): 64Shackle Diameter (mm): 9Shackle He