The Sew Steady tables are made to fit each machine model. I have several of them. Even my sewing desk had their type insert that fits my machine. I also have a 24 x 24 table that I take with me whenever I take my machine somewhere else besides my desk.
If you google Sew Steady I think you will come up with a link.
I think the company name is Dream World.
http://stores.homestead.com/dreamworld/StoreFront.bok