I bought this a couple of months ago because I got tired of buying 1 lb. propane cylinders for the 1980's camping grill I inherited from my father. The small cylinders are inconvenient and wasteful, since you cannot have them refilled, and I already keep a 20 lb. tank for my home-brewing burner. Anyway, the adapter fits perfectly, even though the grill I use it on isn't a Weber. It is very well made. The hose feels solid while remaining quite flexible; the brass fittings are heavy and nicely-machined, and everything threads together easily and tightly with no leaks. I can see using this adaptor for many years with no issues.