The parts for the center section.
The housing is DOM with an inside diameter of 1.380". A mounting tab of 1" by 1/4" hot rolled is drilled and then welded to the housing.
The center tube that fits on the Loc-Line fittings is 3/4" electrical conduit. This piece needs to be 1.060" shorter than the housing. This will provide a perfect fit when it is all pressed together.