Qcc1 POL Propane Tank Adapter Fits 50lb Tank (Universal Fit) From Grill Doc Safe and Easy to Install Made of Brass - Enhance Your Grilling Experience Now! Original part number: 11051 Easy to install ; For use with appliance designed to use a 1lb throwaway cylinder Adapts P.O.L. tank valves to fit Type 1 hoses and regulators Measures 5.12H X 4.33L X 1.57W Built in safety feature that will ensure you NEVER over-fill your smaller tank