"CONSISTS OF,TWO FLANGES,STEEL,SAE 1020,SQUARE SHAPE,3.813 IN. ON EACH SIDE,4 HOLES,0.438 IN. DIA,INSIDE DIA OF 3.000 IN.,TWO STEEL TUBES,WELDED OR SEAMLESS,1.250 IN.-LENGTH,3.000 IN.-OUTSIDE DIA,0.125 IN. WALL THICKNESS,ONE FLEXIBLE TUBE,SPEC 5174142,SHOULD NOT LEAK AIR UNDER 10 LBS PRESSURE,O/A LENGTH-9.625 IN."