✅ Extra large cones of heavy duty long staple, mercerized 100% cotton thread. Perfect for quitling and sewing ✅ Threadart 100% cotton heavy duty thread is all purpose and is the standard for hand and machine quilting. Works great on regular sewing and long arm quilting machines ✅ Excellent for general sewing, piecing, applique, serging and embroidery ✅ 2500M cones. Available in 19 different shades. Smooth sewing 100% pure long staple mercerized cotton ✅ 40/3ply. Strong and low lint. The best cotton sewing thread you can buy. Long staple, mercerized 100% cotton thread. This heavy duty all purpose cotton thread is the standard for hand and machine quilting. It is also excellent for general sewing, piecing, applique, serging and embroidery. This color assortment features the most popular shades for hand or machine quilting. 40/3 ply. 2300M spools are available in 17 different shades.