5mm ferrule for higher port density. Push-pull locking mechanism for secure and easy connections. Customizable cable length, jacket material, and fiber specifications. With virtually no protrusion from the packaging. EIA/TIA FOCIS 13 pending approval. 25 mm ferrule technology, is the only standardized small form factor connector combining high packing density, reliability, high performance and safety due to its automatic metal shutter. The ST connector remains one of. LX. 5 is a high performance connector which meets the highest standards by excellence in design and manufacturing processes.