Most widely used Serger thread. 40/2 Spun polyester. 3000 yds/cone. Maxi Lock cone thread has the same color fastness, strength, sewability and color selection that is standard to the world's leading clothing manufacturers. Its fine size is ideal for virtually all materials, including lightweight fabrics. Although it is made for the overlock/serger, Maxi Lock easily adapts to any machine. Maxi Lock threads comes in 72 colors. Please call us for a free Maxi Lock color chart. If the Maxi Lock color chart doesn't help, send us a swatch, we will match it up for you to the actual Maxi Lock thread.