The bar is 1/2x3/16. I've been using my oxy/propane torch to anneal the brass. I've been successful once with the appropriate amount of heat, but it is frustrating. I only need four bands, to wrap around two pieces of 5/8sq. My four foot length of brass is quickly disappearing. Might have to go with 1/4x1/2 iron. Just thought I would try. I like the look.