This is a nickel-plated 10G Shielded Keystone Feed-Thru Coupler from Simply45. Each coupler provides feed-through patching via a standard patch panel, keystone wall plate, or surface mount box. The snap-in RJ45 shielded connector jack is simple to install and provides a robust female-to-female in-line RJ45 connector coupler that supports Cat 7a, 7, and Cat 6. The nickel-plated zinc alloy metal housing shields your connection from interference and the gold-plated contacts make a good corrosion-resistant connection.