Costco is currently stocking 20 lb propane tanks under the name FlameKing. 2 out of the three that I bought on June 12th were defective and could not be filled. I complained to the company and they called and told me that the only way to get a good one was to keep taking the defective one back until I got one that could be successfully filled. Not how I want to spend my time. A lame answer, indicative of a an importer that has no idea what they are doing.