Sailrite makes a 7" variety so I opted for sewline's model. The part's serial numbers in the manual match sailrite's. Many interchangeable parts and parts through sewline. The paint is traditional industrial style which I also like more than the colorful sailrite machines. And my flywheel has a smaller radius so I yields more stitches per minute than sailrite's. I like sailrite though a lot and got parts from them and more.