Double Female Connection: just plug the HDMI/Coax cable on both sides.
NO WIRES MESS: Hide cables in wall for a neat appearance.
IMPORTANT REMINDER: To reduce the difficulty snapping the HDMI jacks into the plate, please put it on the ground, then press down the plate, repeat the work utill finish all of them; try to use a thin head flat screwdriver to remove the jacks, so it won't be broken in half.
Usually used with the single gang low voltage mounting bracket(Black).
IN THE PACKAGE: 2 x HDMI keystone + 1 x Coax TV F-type connector + 1 x 3-port plate + 2 x screws.