Onlyfire Safest QCC1 Regulator Valve Propane Refill Adapter for Steel Propane Cylinder with Type 1 - Fits All 1 LB Throwaway Cylinder Well-constructed, built Heavier, Bigger, and Safer Easy to install with handheel grip - for tightening Fits all 1 lb. small bottles and refill easily Cuts off gas flow automatically when pressure is reached (rubber ring allows for proper seal) Great for camping or cooking outdoor