SCHMETZ Chrome Professional Grade is the perfect sewing partner. Chrome resists heat and wear. Chrome will stay cool longer with less stitch distortion and aids the thread to pass through the needle eye with less friction and less heat build-up. Chrome also allows the needle to pass through the fabric with less resistance. Sharp points allows to penetrate all kinds of fabrics for a professional serged look. This needle is designed for use in electronic multi-purpose sergers that do the overlock, cover, safety, and mock safety stitches. Not suitable for use in normal home sewing machines or embroidery machines. Machines should specify ELX705 system.