Adapter, Connection Size 1: 4 in, Connection Type 1: Type F, Connection Size 2: 4 in, Connection Type 2: MNPT, Aluminum, 3.78 in ID x 4.79 in L, Maximum Operating Pressure: 150 psi, Additional Information: 0.4 in Chain Lug Extension, 3.19 in Exposed Length, 2.480 lb Weight