The POL screw into Female end ; ONE pol to qcc1 propane tank adapter with a gauge ; Great for Propane appliances, Smoker, Fire Pit Table, Patio Heaters, Camping Stoves, lanterns, BBQ Grill, Camper, Cylinder, Outdoor Cookout, Turkey Fryer, Stoves, Gas Grill, Heater, Camp Stove, Tabletop Grill etc. Thanks for shopping with us!