KLASSE ball point sewing machine needles are designed for knit sewing when you want seams that stay smooth and flexible. This carded pack includes 5-pack in size 80/12 for sewing many common knits with reliable stitch quality. Test on scrap for tension and stitch choice, and change needles as needed to help prevent runs, skips, or puckers for consistent results across your sewing routine for consistent results across your sewing routine.