Made with a laminated steel core surrounded by stainless steel and zinc outer components, the Master Lock Co. Magnum steel keyed padlocks are durable and secure. They feature dual ball-bearing locking mechanisms and 4-pin cylinders for pick and pry resistance. The Master Lock Magnum® No. M5XT laminated padlocks feature a 2 In. (51 mm) wide laminated steel body for maximum strength and reliability, and is surrounded by stainless steel and zinc outer components for weather resistance.