Thread > Masterpiece Thread from Superior Threads 50 wt. 3-ply Egyptian-grown extra-long staple cotton thread. Designed for piecing, sewing, and quilting. MasterPiece is a strong, low-lint cotton thread that doesn't add bulk to your seams. The fine cotton fibers help to grab the fabric and create a tight stitch, even while stitching at a high speed on a longarm machine. A fine matte finish allows MasterPiece to blend well and also makes it a fantastic choice as a bobbin thread when sewing.