Using these ChiaoGoo RED Lace Circular Needles is a breeze. Just thread your yarn through the smooth red - nylon - wrapped cable and start knitting away on your project. When using, make sure to handle the pointy tips carefully to avoid any accidental pricks. For best results, keep your needles clean. You can gently wipe them with a soft, dry cloth after each use. Store them in a dry place to prevent any rusting of the stainless - steel parts. If you're using different sizes for a project, label them clearly so you don't mix them up. And remember, the US 17 size has a non - standard measurement, so take that into account when planning your work.