D4 to LC DUPLEX SINGLEMODE Cable

D4 to LC patch cords is commonly used in Telco network devices and some old network machines. D4 connector has a smaller ferrule than that of SC or FC.
We manufacture D4/D4 terminations with low insertion loss and with secure connector engagement.  High Quality and Durable Threaded Nickel-Plated Brass Connector Body, Zirconia Ferrules