Using these ChiaoGoo Knit RED Circular Needles is a breeze. Start by threading your yarn through the cable. The smooth red nylon coating on the cable helps the yarn slide easily as you knit. When working on your project, hold the needles comfortably in your hands. Since they have blunter tips, they're great for projects that need a bit more stability. As for maintenance, after use, simply wipe the needles with a soft, dry cloth to keep them clean. Avoid using harsh chemicals as they might damage the smooth finish. Store them in a cool, dry place, away from direct sunlight to prevent any discoloration or damage to the cable. With proper care, these needles will last you a long time and be your go - to for all your knitting adventures.