Schmetz Topstitch Needle -Extra sharp with an extra-large eye and a large groove to accommodate topstitch thread. Uses - topstitch, heavy, multiple or poor quality threads. Achieve perfectly straight stitch lines and even stitches when using a straight stitch plate. Replacing your needle is the easiest way to improve your stitch quality. Change your needle, damaged or worn needles result in: broken or shredded threads, skipped or uneven stitches, puckered or damaged fabrics, popping sounds made by the sewing machine. These are size 14/90. Color code on shaft is Light Green