Only for use on sewing machines. Can create alternative coverstitch stitches to coverstitching machines. Promotion: Buy 8 mixed specialty packets(such as Jeans, microtex etc) and more, discounts off $0.90 per packet. This needle is suitable for sewing stretch material like knit and sportswear fabrics and for creating decorative stitches This needle has a special designed shape and medium ball point for better loop formation, thus preventing skipped stitches and fabric yarn breakages. Each packet contains 2 pieces