About this item Couplers can be used to join two LC Duplex Fiber Optic Cables together. Insert the LC connectors and lock the mating cables into place without the use of tools. The alignment sleeve keeps the ferrules of the two cables aligned perfectly to ensure steady data transmission and prevents dB loss. Versatile design accommodates two Simplex LC Connectors or one Duplex LC Connector. Durable single-body construction provides long service. Dimensions: 5.28 x 2.87 x 0.63 inches.