These Klasse needles are ideal for sewing or embroidery with Rayon and Metallic threads on woven or knitted fabrics. Designed with a very large eye, allowing threads to feed freely. Also suitable for general purpose sewing. Made using german technology developed over 125 years. Suits all modern sewing machines including, Bernina, Bernette, Brother, Elna, Husqvarna, Jaguar, Janome, New Home, Pinnock, Pfaff, Simplicity, Singer, Toyota, Viking, and Victoria.