Coax Feed Through Bushing RG6 Wall Cable 2 Pack 7/16" Hole Insert Plug Thru Wall Trim Protector for Audio Video Data Wire, 1 Black / 1 White Used to finish wall opening due to drilling for coaxial cable pass-thru Bushing will fit 7/16" holes to seal openings made to feed 75 ohm coaxial cable from outside to the interior of buildings or between rooms