Onlyfire Universal Propane Tank Refill Adapter- 100% Solid Brass Regulator Valve Accessory for all 1 LB Tank Small Cylinders Built Heavier, Bigger, and Safer than others on the Market. 100% high quality solid brass construction makes it CORROSION RESISTANT -Brass is not easily broken. It pays for itself after only several uses.You'll never have to buy another tank again. .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 onlyfire adapter automatically cuts off gas flow when pressure is reached. Has Soft Nose POL (rubber ring allows for proper seal)