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 female coupler connects to its male equivalent . We also carry a complete set , including a single male and single female coupler. 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 Our quick connect couplers are compatible with the following: Manufacturer Female SUMMIT 4100F-20N Parker 6100 Series 6125-20 Eaton Aeroequip 5100 Series 5100-S5-20B Dixon W Series 10WF10-B Faster FB Series FB 20/114NPT F5 Snap-Tite 78 Series B78C20-20F Stucchi W Series 100610020 C51WS-20-20 NPT DNP VFF-20-20-C-NPT What' s Included : Female Wet Line Coupler