Summit 1-1/4 Wet-Line / Wing Nut Couplers are designed for industrial applications that require couplings to be connected and disconnected under pressure with little to no fluid loss. Wet-line couplers are commonly used on live bed / dump trailer wet-line hydraulic systems and other heavy duty applications. Applications: Dump Trailers, Live Bed Trailers, Mobile Drilling Rigs, Sand and salt spreaders, Oil Well Equipment, Heavy Equipment. This 1-1/4 male coupler connects to its female equivalent . Features: Brass body coupler and nipple prevents corrosion, Heavy-duty steel sleeve and wing nut, Nitrile seal with Teflon backup, 3000 PSI working pressure rating, 1-1/4 NPT Female Pipe Thread. Nominal Flow Rate: 80 GPM. What' s Included : Male Wet Line Coupler.