network coupler, ethernet cable extender female to female, cat6 inline couplerin, cat5 connectors, for cat7/cat6/cat5/cat5e ethernet extension cable (10 pack blue) zuzong rj45 female to female coupler <br> ideal tool for extending your home or office network, ensure a secure and corrosion free ethernet connection by connecting 2 short male network rj45 cables together and work as one cable.<br> made of high quality environmentally friendly pvc material, with high impact resistance, heat and low temperature resistance etc. advantages. interactive snap-in buckle design, firm and reliable connection.<br> thickened pcb board, metallic shielded,robust and durable <br> compatible with cat-5, cat-5e, cat-6,cat-6a and cat-7 ethernet cords.<br><br> package contents:<br> 10 x rj45 couplers<br><br> note:<br> can not use with a keystone jack. <br> it is not for a phone cable, but for an ethernet cable.<br> they are only compatible with rj45, not compatible with rj11.