Fiber Optic Couplers and Adapters - ST SC/APC SC LC FC - Industry Proven - Singlemode. (LC to LC)

PacSatSales - LC Fiber Coupler 10 Pack - Single Mode LC Coupler Set - Every LCUPC Fiber Connector is pre Cleaned & Extends LCUPC Optical Cables - Single Mode Simplex or Duplex Compatible

YIENFBEV LC Fiber Optic Adapter - LC to LC Duplex Singlemode Coupler - 5 Pack - Blue

Fibershack LC Coupler - 20 Pack Single Mode LC Fiber Adapters, Cleaned & Extend Fiber Cables