Using these addi Turbo Circular Needles is easy. Just thread your yarn onto the needle and start knitting as you normally would. The smooth nickel coating helps the yarn move effortlessly, so you can work on your projects faster. When it comes to the non - standard sizing, double - check the size you need based on the information provided. For cleaning, use a soft, dry cloth to wipe the needles and cords. Avoid using harsh chemicals or abrasive materials as they could damage the coating. Store the needles in a cool, dry place to keep them in good condition. And be gentle with the plastic needle tips of US 36 and US 50 to prevent breakage.