Klasse Machine Needles go through 163 quality checks, earning the industry's highest quality rating for: stability at high speeds, seam appearance, clean stitch holes and precise and uniform stitchability. Each needle has a unique number stamp identifying its point style and size when separated from the package. Universal needles are commonly used for woven and natural fibers. Use with polyester, 100% cotton or poly cotton blend threads. Universal Machine Needle Assorted Size 6pc- Includes: 2 each of 60/8 and 100/16, and 1 each of 110/18 and 120/20.