The Polyphaser OFC-FAFA-A-SB0MMT0 is a fiber optic coupler for use with FC/APC simplex connectors. The Polyphaser OFC-FAFA-A-SB0MMT0 has a bronze sleeve designed for used with single mode fiber. The Polyphaser OFC-STST-A-HZ0MMT0 fiber optic coupler has a high quality square metal body which ensures long-lasting operation in a variety of installation scenarios. The Polyphaser OFC-STST-D-HB0MMT0 is one of thousands of products continually in-stock, and ready for same-day shipping.