Gutermann Natural Cotton Mine Blue Thread is a high-quality 100% Mercerized Cotton thread that is perfect for machine sewing, quilting, and various sewing projects. With a length of 110 yards, this thread is strong, low lint, and has a silk-like luster. Ideal for lock and step seams, quilt piecing, appliqué, and more, this thread in Mine Blue color is a versatile choice for sewing enthusiasts. Recommended needle size is NM 60-80 / US 8-12.