DozyAnt Propane refill adapter Built Heavier, Bigger, and Safer than others on the Market. It pays for itself after only several uses.You'll never have to buy another tank again. 100% Solid Brass Construction makes it CORROSION RESISTANT . Soft nose POL; Fits all one pound tanks and Easily Refill one pound bottles Built in safety feature that will ensure you NEVER over-fill your smaller tank. The DozyAnt adapter automatically cuts off gas flow when pressure is reached. Has Soft Nose POL (rubber ring allows for proper seal)