Midland Metal 76400 3-1/2" Diameter, Aluminum Nipples, 3-1/2 x Close Alum Nipple, Nipples and Fittings

Pipe Nipple, Connection Size 1: 3-1/2 in, Connection Type 1: MPT, Connection Size 2: 3-1/2 in, Connection Type 2: MPT, Close L, 3-1/2 in Dia, Aluminum, 3-1/2-8 Thread, Additional Information: 0.570 lb Weight