Coats Ultra Dee Polyester Bobbins #M Size 138 Black (144 pack)

Experience exceptional reliability and strength with the Coats Ultra Polyester Bobbins, featuring a continuous filament polyester thread. These bobbins are designed for extreme conditions and applications such as leather goods, outdoor products, seat trims, footwear, luggage, upholstery, and marine uses. The M size 138 (Tex 135) thread is pre-wound on robust bobbins, offering 24 yards each and a total of 144 bobbins per pack. With a left twist (Z twist) and a 21 lb break strength, these bobbins are ideal for high-stress sewing tasks, providing reduced fraying and minimal stretch due to their heat-set and bonded finish. Available in multiple colors, including black, these bobbins are perfect for maintaining professional-grade results in demanding environments.