Extend CAT6 Ethernet Cables: The Black Cat6 RJ45 Keystone Coupler allows you to extend your Ethernet connection without needing to buy additional network cables Gold Plated Contacts: Features gold plated contacts which ensure a secure and corrosion-free connection, making it stable for data transmission and communications Transmission Speed: With a transmission speed of up to 1 Gbps, our Keystone Coupler ensures that there is no loss of data speed or quality Slim and Compact Design: The RJ45 Keystone Ethernet Coupler features a slim and compact design, making it perfect for fitting all standard keystone wall plates and patch panels Wide Compatibility: The Keystone Coupler is perfect for voice, home networking, home office, audio, video and more. Compatible with Cat6, Cat5, and Cat5e cables