Using your addi Turbo Circular Needles is easy. Just thread your yarn through the needle and start knitting as you normally would. The nickel coating helps the yarn glide smoothly, so you can work on your project faster. When using, be aware of the non - standard sizing of some smaller needles. Always double - check the size you need. For maintenance, simply wipe the needles with a dry cloth after use. Avoid using harsh chemicals as they might damage the nickel coating. Store the needles in a dry place and keep them away from sharp objects to prevent scratches on the cords and tips.