Ethernet Extender RJ45 Couplers Network Cable Coupler Cat 5 Coupling Lnternet Female to Female Connector Lnline Coupler for Cat5/ Cat5e/ Cat6e/ Cat7 Ethernet Extension Cable (Blue 20 pce)

Description RJ45 Coupler RJ45 In-line Coupler ideal for extend the connection between two ethernet patch cable, fit for cat7, cat6, cat5e Features 1.RJ45 Coupler Relatively sturdy and incredibly easy to use 2.Thickened PCB Board, Robust and Durable 3.Premium Material: Environmental ABS Gold-plated contacts, RoHS certificated 4.Fast Speed: The ethernet connection coupler speed up to 10-Gigabit for cat7/cat6/cat5e, with stable signal, no stuttering 5.Interference-prevent: RJ45 connector, Shield external EML, RFI and other signal interference, to prevent the lack of network signal damage Package Included 20 x Blue RJ45 Couplers Please note: This can not use with a keystone jack.

It is not for a phone cable, but for an Ethernet cable.