100 wt. 2-ply filament silk thread. Designed for applique, binding, quilting, and sewing. Kimono Silk is a very fine, 100% premium multi-filament silk. Ideal for hand and invisible machine applique, detail quilting and lacework. Recommended Needle Size: Topstitch 70/10 or 80/12 for home machines & #14 (MR 3.0) for longarm machines.