Ethernet Coupler, MACTISICAL 2 Pack RJ45 Keystone Inline Coupler Adapter for Cat7 Cat6 Cat5e Network Cable (Black) SIMPLE AND CONVENIENT  It is ideal for extending Ethernet cable by connecting 2 short network cables together. And it is for patch panels or wall plates with standard keystone ports. OFC Connector  The port is Oxygen-free copper(OFC) and the outside is PVC material, ensuring a secure and corrosion free connection. Whats more, the gold plated contact is easier snap-in retaining clip. High speed  The transmission speed can be up to 10Gpbs . COMPATIBLE  This female to female rj45 8P8C coupler is compatible with Cat 7 Cat6 Cat5 Cat5e network Ethernet cable. WIDELY USED  It is small size, easy to carry and can be widely used in office and home.