Medeco 4 (M4) cylinders build on more than 50 years of lock engineering innovation and deliver the highest level of protection against physical attack and unauthorized key duplication. M4 cylinders are UL 437 listed, with solid brass construction and hardened-steel inserts to thwart drilling attacks. In addition to pins that lift and rotate, M4’s design includes four side pins: three finger pins and one lift pin, which provides a high level of pick resistance. The patent-pending M4 key design with its movable element helps to protect against the emerging threat of 3D printing for unparalleled credential security.
More info: www.medeco.com