●Brand: YAYUU Left Twist Material: 100% Polyester No. 60 Needles (No.) 11-14 Thread Length: 3,000 m/roll Set of 4 (*As the picture is for the image, color and size may vary depending on the model number you choose. ) ●(Main Use): #60... Can be used for underwear, workwear, knit products, various types of clothing, and for sewing on both thin and plain surfaces ●Among the polyester materials, we use raw threads that are specially spun for sewing machines, which are high strength, low elongation, and low shrinkage, and the advanced processing technology makes this sewing machine thread a better range of use