Product Name: Hot Dip Galvanized Bauer Coupling, S78
Type: Bauer Coupling, Hose Coupling
Material: Carbon Steel
Size: 3 Inch, DN80
Connection End: Socket
Surface Treatment: Hot Dip Galvanized

Source: https://www.landeepipefitting.com/hot-dip-galvanized-bauer-coupling-carbon-steel-3-inch-s78.html