Junction box is for splicing two Ethernet Cat.6 cables together without the use of connectors and couplers; if you're going to joint 2 wires together permanently, it's best to have as direct a connection as possible. The punch down connection provides secure continuity. 110 and Krone punch down type For use with Cat.6 cable Wire gage: 23 to 26 AWG 568A/568B color coded UL listed Lifetime Warranty