Klasse' Ballpoint Needles Size 80/12 5 German-Engineered Steel Machine Needles The Ballpoint tip prevents needle from piercing and breaking fibers. Best for: Most cotton knits, interlock rib knits, fleece, double knit, Ultrasuede, and most other knit fabrics. With a unique curved design at the clearance-above-the-eye "CAE" stress point distributes pressure equally which makes Klasse needles much stronger then other flat conventional needles