1/2 Flat Face Hydraulic Quick Connect Coupler Set, 3/8 NPT Thread. Body Size: 1/2 Body. Thread Size: 3/8 NPT Thread .This coupler set uses a flat face design for spill resistance, much improved over its Agricultural or Pioneer counterpart. The design also minimizes pressure drops. With a robust steel design, the couplers easily can push-to-connect. The flat face quick coupler features a hardy 5,076 PSI rating and has a maximum GPM flow rating of 23.78. Features: Universal coupler and plug set. Flush face valve design minimizes fluid loss. Allows for minimal pressure drops. Easy single-handed push-connect design. Hardened steel construction with hardened sleeves. Corrosion-resistant trivalent zinc plating. Locking sleeve to prevent accidental disconnection. Nipple seal resists blow-outs. Seals are rated for operating temperature up to 250 F. 5,076 PSI rating. 23.78 GPM Max Flow Rate. Interchangeable with other ISO 16028 standard couplings.