Universal needles feature a slightly rounded point and are used for numerous woven and knits. A great general purpose needle. Schmetz needs work with all sewing machine brands. 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 100/16. Universal needles are not color coded for type, only size