This medium ballpoint needle is suitable for sewing with woven and knitted fabrics such as: jersey, fleece, and stretchy rayon. Organ Needle Company is the world's largest industrial needle manufacturer. Many sewing machines are factory shipped with these top-quality needles. Great for sewing on fine elastics, knit fabrics, and other stretchy fabrics. Perfect to use with 40 wt. Rayon and Poly, as well as regular sewing threads.