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. Quilting needles have a tapered point that penetrates the fabric without damage. The strengthened shaft helps reduce deflection as it penetrates multiple layers of fabric. Use with cotton, polyester, rayon or blended quilting thread. Size 75/11 6pc