Home, professional, and zigzag sewing machine compatible edge finishing attachment. Sewing machine accessory, patented Ruby brand. With instruction manual. This is a very old item and has been stored at home for a long time without being used, so the operation has not been confirmed. Please understand and accept the above condition. - Model: R-03 Overlock Zigzagger - Application: For home, professional, and zigzag sewing machines - Features: Edge finishing attachment