Aurifil's 50wt/2ply thread is our most versatile and most popular Cotton thread. It is wound on our iconic orange spool. The 50wt is strong and thin, and results in remarkably flat and crisp seams. While it is wonderful for piecing, subtle quilting & topstitching, and English Paper Piecing it also works incredibly well for Needle Turn Applique, Bobbin and Machine Lace, Machine Applique (Straight Stitch, ZigZag, Blind Hem and Blanket Stitch,) Machine Embroidery, Dense Machine Quilting, Subtle Machine and Longarm Quilting, Basting, Whole Cloth and Micro Quilting, and Dense Background Designs. Uses: Needle Turn Applique, English Paper Piecing, Hand Piecing, Bobbin and Machine Lace, Machine Applique (Straight Stitch, Zig Zag, Blind Hem, and Blanket Stitch), Machine Embroidery, Dense Machine Quilting, Subtle Machine and Longarm Quilting, Basting, Whole Cloth and Micro Quilting, Dense Background Designs. Needle Recommendations: 80/12 Microtex/Sharp, Universal, Quilting, or Denim Needles (50wt in the bobbin) 4.0 Longarm Needle (50wt in the bobbin).