Where to buy shelf support columns?


Looking to get tubular columns that support shelves in today's rack systems.
These are about two inches in diameter and are threaded at both ends.
Anyone know a supplier?
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If your looking for what I think you are looking for I can make them. I don't think you will find them as a standard stock item. If you want to send me a e-mail with your phone number I can call you later. dadt531@aol.com
Dave