Ultra-fine 100% nylon monofilament designed to blend with medium to dark fabrics for discreet stitching. Excellent for invisible hems, topstitching, in-the-ditch quilting and appliqué where a subtle finish is desired. Fine diameter helps achieve even tension and reduces bulk in overlapped areas. Convenient 457 m (500 yd) spool for craft, garment and home-decor projects. Suitable for home and classroom use; keep with core sewing notions for consistent results.