Medeco 54-72500-00 54 System Series All Weather 7/16" x 3/4" Padlock With High Security 00 Original Keyway, specially designed for a multitude of applications, and it has a distinctive body style with a shrouded shackle. This padlock utilizes a baron alloy steel shackle which provides protection to resist cutting and increased tensile strength to resist pulling attacks. The baron alloy steel ensures that the shackle has an exceptional degree of ductility and it is not brittle. The cylinder in this padlock is constructed of durable machine brass components, and it has hardened stainless steel inserts to provide the ultimate defense against drilling, pulling, and other forms of vandal attacks. The Medeco unique design provides triple locking action, making the lock virtually pick proof. All Medeco keys and locks are protected under patent, trademark, and copyright laws. This padlock comes in a standard black body cover and the cylinder is furnished in the satin brass finish.