Join two cat6 patch cables together to make a longer cable the c6keycouplwh white cat6 rj45 coupler offers a practical cost effective solution for joining two of your category 6 patch cables together enabling you to extend the length of both cables in order to form one longer cable with the form factor design of an rj45 keystone jack this network coupler can also be installed in a keystone wall plate or patch panel this keystone coupler is durably constructed of only top quality mate