NOS Siphon Tube for 10 lb Bottle with Hi-Flo Valve-Non Threaded;Made From 6061 Aluminum; Tube is 3/8” I.D. for Maximum Flow; Can be used on NOS 10lb. Blue Bottles with Hi-Flo Valve; Designed to Replace Old Style Compression Fitting Siphon Tube; Service Part for NOS Bottle Valves;