Swing Away Roller Guide With Mounting Screws. For stitching perfect even seams along straight edges and curves. Great for leather work. Roller can be swinged away when not in use. Comes with two mounting screws. Roller size : 8mm (5/8") diameter Arm length : 68mm (2-5/8") This roller guide can be attached to sewing bed using mounting screws to most industrial sewing machines and some home sewing machines including Artisan, Brother, Consew, Gemsy, Highlead, Juki, Mitsubishi, Rex, Singer, SunStar, Tacsew, Yamata and many other.