The product is a pack of Singer Universal Topstitch needles, specifically designed for sewing machines with a 100/16 size. The pack includes a total of 10 needles, with 5 needles in each pack. These needles are manufactured in Brazil and are a reliable choice for various sewing projects due to the reputable Singer brand. Ideal for both beginners and experienced sewers, these needles offer quality and durability for precise and efficient stitching.