Using these ChiaoGoo Knit RED Circular Needles is a breeze. Just thread your yarn through the cable and start knitting as you normally would. Since the yarn slides easily on the smooth nylon - coated cable, you'll have a more comfortable knitting experience. When it comes to maintenance, keep them in a dry place to prevent rusting. Avoid using them with overly sharp or rough objects that could damage the cable or the needle tips. If they get dirty, you can gently wipe them with a soft, dry cloth. That's all you need to know to keep these needles in great shape and create beautiful knitted items!