What are the different types of needles available for Singer sewing machines and what are they used for?

Singer offers multiple needle types including Universal needles for general sewing, Ball Point needles for knit fabrics, Microtex needles for microfibers and topstitching, Leather needles for leather and suedes, Denim needles for denim and heavy fabrics, Embroidery needles for decorative stitching, Quilting needles for quilting, and Twin needles for creating two rows of stitches simultaneously. Each needle type is designed for specific fabric types and sewing applications. (Pages 49-53)