This Universal Quick Disconnect Coupler features a new improved design for high flow performance and maximum service life. 1” ISO Body, 1” NPT Thread, Built to ISO 16028 standards and interchange with all other ISO 16028 Flat Face Couplers Heavy Duty Design with 5076 PSI Rating - 50 GPM Max Flow Rate Locking sleeve helps prevent accidental disconnects Flush face design is easy to clean and has virtually no fluid loss or air inclusion