Specifications: These are the same jacks our it install team uses across the United States. These are professional quality punch-down or clip down style jacks. They fit all standard leviton jacks and are compatible with every connector that we sell here on cct. Each jack has a 110 punchdown termination on the back with a rj45 socket on the front. All contacts are plated with 50 micro inches of gold. Additionally, they are rated to 350 MHz and are available in 8 different colors.