Most widely used Serger thread. 40/2 Spun polyester. 6000 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 3 colors. Please call us for a free Maxi Lock color chart.