Eiko 13129 - 4 X 2 3/8? Tenon Pole-Mount Top Tenon Adaptor (PA-4XBH-BK)
$374.99
Eiko 4 X 2 3/8? Tenon - Pole Mount - Premise - Black | Eiko Tenon Adaptor (PA-4XBH-BK 13129)