Gail Yellen’s Thread Fusion is a decorative thread blending tool. Create subtly color-blended stitching for beautiful embellishments on quilts, garments and home décor projects. It’s wonderful for overlock and cover/chainstitching as well as machine embroidery, stunning thread painting and multi-thread topstitching for surface embellishing. Useful with all types of threads (threads not included) and can be used on all domestic sewing machines serger, long arm and embroidery. It conveniently holds four regular or four mini king spools of your favorite threads at a time. Position over machine thread vertical spool spindle or with a thread stand. The UNIVERSAL Thread Fusion has a 2¾ in. round base and fits all brands and models of sergers, sewing, embroidery and quitling machines. The non-slip rubber ring grips all surfaces firmly. It conveniently holds 4 regular or 2 mini king spools of your favorite threads at a time for machine embroidery too. Great for most brands of sergers, sewing machines, embroidery and quilting machines.