This series of couplers are the most common quick connect couplers used in the agriculture, construction and logging industries. They are interchangeable with all 1/2 body ISO 5675 series / Pioneer style couplers including ball seat valve, poppet seal, and 1/2 Body ISO 7241-A couplers. ISO Body Size: 1/2. Body Thread Size: 1/2 NPT Thread, Ball Valve. This 1/2 coupler set consists of a male and female quick coupler. Features: Nominal Flow Rate: 7.9 GPM. Max Flow Rate: 14.5 GPM. 3600 PSI Rating. Hardened Steel Plugs. 23,000 PSI Burst Rating (Coupled). What's Included : Female Coupler, Male Coupler