What this propane refill adapter can offer you is that it is made of a strong metal material, which makes it less prone to corrosion and wear, giving it a longer service life.It is this propane refill adapter features that helps you fill your small disposable canister easily and quickly, and it has a tight thread design that allows it to be mounted tightly to the adapter, preventing leaks.Made of brass material, it is very durable to use.Its external thread is 7/8-14 tooth Unf left thread, and internal thread is 1 inch-20 tooth fine thread.It is suitable for transferring the liquefied gas in a large gas tank to a small gas tank for barbecue or when going out camping. The thread adopts the American standard thread, which is suitable for the type required by the United States and other foreigntrade.Item Name: Propane Refill AdapterMaterial: BrassFeatures: High Adaptability, Compact, DurableCapacity: 80000-150000BTU/HourWorking Temperature: Minus 40 Degrees Celsius to 55 Degrees CelsiusImport: 25-250PSIGExport: 2.5PSIG-20PSIGSize Details:Size: Its external thread is 7/8-14 tooth Unf left thread, and internal thread is 1 inch-20 tooth fine thread.Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Propane Refill Adapter