Size: 5/8 Body with 3/4 SAE (1 1/16-12 ORB) Thread, also know as Dash -12. This 5/8 coupler set consists of a male and female quick coupler. Features: Heavy Duty Design with 5076 PSI Rating. Max Flow Rate: 39 GPM. Locking sleeve helps prevent accidental disconnects. Compact profile with high flow performance. Harden steel construction with anti-corrosive plating. Sleeves are hardened to resist deformation and maximize life of the couple.r Valve design that allows for a minimal pressure drops and one hand operation. Seals are rated for operating temperatures up to 250°F.