​​MX Series steps ahead of the competition by offering one of the most competitively priced Key Control Services available. You no longer have to worry about unauthorized copies of your keys being made without your knowledge. MX Series is a strictly controlled keyway of propriety design with control of distributing.

Bridge City Lock & Key is a licensed dealer in Medeco KeyMark®, Medeco M3® and GMS MX® keyways

            KeyMark® by Medeco® offers patented key control without the physical pick and drill resistance of Medeco's High Security product line.  Medeco® manufactures KeyMark® for applications when key control is a necessity, but resistance to physical attack may not be as high a priority.


  KeyMark® cylinders will fit into most common locks, including conventional rim and mortise cylinders, knob cylinders, and Best® style and other lock manufacturers' interchangeable core installations. KeyMark® is an entire system of affordable replacement cylinders with genuine, patent protected key control from Medeco®, the company who pioneered high security key control.

High Security Products


Your Lock & Security Professionals Since 2002

145 Roberts Ave.  Bridge City, TX 77611