Using these addi Turbo circular needles is a breeze. Simply thread your yarn through the cord and start knitting as you normally would. The smooth nickel coating helps the yarn glide easily, so you can work on your projects faster. When it comes to cleaning, use a soft, dry cloth to wipe the needles and cords. Avoid using harsh chemicals as they might damage the coating. Keep in mind that some of the smaller sizes don't follow standard US sizing, so double - check before starting your project. And since the US 36 and US 50 needle tips are plastic, handle them gently to prevent breakage. Store your needles in a cool, dry place to keep them in good condition.