· VCE Double female cat6 coupler can be used with Cat6, Cat5e, and Cat5 Ethernet cables.· CAT6 Keystone inline Coupler UL Listed (E521847) for voice, home networking, home office, audio, video, and more.· Fits all standard keystone wall plates and panels.· Gold plated contacts and an easy snap-in retaining clip ensure a secure and corrosion free connection.· Warranty: Provide 18 months warranty for quality problems. With UL Listed (E521847), use it without concern.