Now people care more working efficiency, so extra big hook is coming in market. Now we highly improve the working speed for 6 time big hook to 1400rpm working speed, 10mm stitch length. So the working efficiency big hook have more advantage.
While heavy-duty denim thread is designed primarily for use with denim, its applications extend far beyond that. Crafters often use it for sewing heavy upholstery fabrics, creating sturdy tote bags, and even in leatherwork. The robust nature of this thread makes it suitable for various projects requiring durability and strength.