My 1st quilt frame was their Grace Pro frame and I also replaced the tracking with the metal rods. Looks like a "T" right? Worked great for me. I also added conduit or galvanized pipes over the rollers as they tend to bow. The conduit piping is soft enough metal that you can screw it to the original rollers. I had to go to our local metal shop to have them cut to fit the 10ft frame but it was a godsend.