Using these ChiaoGoo Knit RED Circular Needles is simple. Just start by threading your yarn through the cable and onto the needle. Then, begin your knitting stitches as you normally would. Since the yarn slides easily on the smooth red nylon - coated cable, you'll find the knitting process quicker and more enjoyable. When it comes to maintenance, after each use, gently wipe the needles with a soft cloth to keep them clean. Avoid using harsh chemicals as they might damage the nylon coating. Also, store the needles in a dry place to prevent rusting. If you're using the needles for a large project, take breaks to avoid hand fatigue. These needles are tough, but try not to bend them forcefully as it could affect their shape and performance.