Klasse Microtex/Sharp Needle For Domestic flat shank sewing machines For silks, micro-fiber fabrics, and for penetrating densely woven fabrics. Sharp point also produces perfectly straight top-stitching and smooth buttonholes. Use with cotton (fine & medium weight), polyester, silk, or rayon thread. Best for: Silk, microfiber, rayon, synthetic suede, and densely woven lightweight fabrics. Image for promotional purposes only, pack will vary according to size Available sizes: 60/8, 70/10, 80/12, 90/14,  Assorted. Pack of 5