Ideal for most woven fabrics, knits and synthetics. The Universal Needle has a slight ball point making it extremely versatile. It works well on most machines and is the most commonly used needle for synthetic woven and natural fibres. The finer needles are generally used on lightweight fabrics and the larger size needles are for medium to heavyweight fabrics. Threads range from 100% cotton and silk to a variety of synthetic and polyester/cotton blends. Assorted pack includes (2) 70/10, (2) 80/12, (1) 90/14