Description PN: QD-YF-S Description: Female QD: 9/16″-18 Male (Connects to a standard regulator hose) Male QD: Connects to any standard 9/16″-18 2nd stage regulator fitting. PN: QDZM-YF-S Description: Female QD: PN: QDZM-YF-S Description: 3/8″-24 Male (Connects to a standard 1st Stage low pressure port) Male QD: Connects to any standard 9/16″-18 2nd stage regulator fitting.
