This 1 1/2" Bulkhead by Aquatic Life features a Slip X FTP connection, with no threading on the interior of the "wet" side and female threading on the "dry" side. The rubber bushing goes on the "wet" side of the tank or reservoir for a proper seal.

LifeGard Bulkhead Fittings Slip x FPT 1 1/2" R441018

SKU: 1774