The Madeira Aerofil Thread Box is ideal for various sewing projects, from quilting to darning. Use Madeira's All-Purpose Aerofil Thread for both machine and hand sewing. This durable thread is made from 100% polyester and will hold firm in any project. This thread box contains 18 of the most commonly used colors. Each Madeira Aerofil Sew-All Thread spool contains 220 yards (200m). Please note that the colors may vary slightly from what is pictured.