ExcellWeather Tough 45mm Padlock 4-Pin - 38mm Shackle - Master Lock M115EURTLF, The Master Lock ExcellWeather Tough 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. Made from laminated steel with a thermoplastic cover for maximum protection against the elements. They have a Rust-Oleum® rustproof finish that guarantees the body free from rust and either a precision 4-pin or 5-pin cylinder. Supplied with 4 keys and a Lifetime Warranty against mechanical failure. Suggested uses: gates, sheds, storage units, fences, containers and chains.The Master Lock M115EURTLF has the following specifications: 2 x 45mm Excelllaminated steel padlocks with weather tough thermoplastic cover - 38mm Octagonal boron carbide shackle, 8mm diameter - 4-pin tumbler cylinder - keyed alike Ma