Using these addi Turbo Circular Needles is easy. Just thread your yarn through the needle and start knitting as you normally would. The smooth nickel coating will help the yarn move along effortlessly. When it comes to cleaning, use a soft cloth to wipe the needles gently. Avoid using harsh chemicals as they may damage the coating. Remember to keep an eye on the non - standard sizing of some of the smaller needles. And be careful with the plastic needle tips of US 36 and US 50 to prevent them from cracking or breaking. Store the needles in a dry and safe place when not in use to keep them in good condition.