Features:The Fiber Optic Coupler is made of high-precision zirconia ceramic ferrule, which provides low insertion loss and high signal integrity. The LC fiber optic adapter is suitable for fiber patch panel, which means you can use them in any type of enclosure with rectangular cutouts. Can be used with 2 LC single-mode or multi-mode fiber optic jumper cables. Connect two Singlemode LC/LC patch cords together or use in an ST patch panel. Adapters can lock the connectors and get low insertion loss to transmission optical signal. The LC-LC Fiber Adapter Duplex complies with IEC 61754-4, IEC 60784-14 and TIA 604-3 and conforms to RoHS standards. Fits a standard opening in a patch panel, wall plate or surface mount box for keystone jacks. Quick assembly LC connector can provide quick and easy termination of fibers in the field. Each fiber optic LC adapter is individually and rigorously tested and certified to be within accurate optical insertion loss. Specifications:Connector type: LC-LC Polishing type: UPC Number of fibers: Duplex Fiber mode: Singlemode/Muitlmode Color: Blue Insertion Loss: ≤ 0.2dB Mounting Type: Reduced flange Alignment Sleeve Material: Ceramic Flammability rating: UL94-V0 Size: 1.2×0.9×3.5cmWeight: 2.7g Package Content: 10 × LC/UPC to LC/UPC Fiber Optic Adapter