KLASSE ballpoint machine needles have a rounded tip designed to slip between knit fibers so your fabric is less likely to snag or run. This cassette includes five assorted sizes 70/10, 80/12, 90/14 needles for sewing jerseys and other knits when you want even seams and reliable stitch formation. Choose ballpoint needles for T-shirts, rib knits, and fleece projects, and select the needle size that suits the thickness and stretch of your fabric.