D4 to D4 DUPLEX SINGLEMODE Cable

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