#50/3-ply Egyptian-grown extra-long staple Cotton thread. Designed for Piecing, Quilting, and Sewing.Designed with award-winning quilter Alex Anderson, MasterPiece is nature’s finest thread. It is certified Egyptian-grown, extra-long staple cotton and designed to create perfectly pieced seams. With the finest spinning, twisting, and dyeing, and finishing techniques, MasterPiece has extremely low lint. You and your machine will love it.