Using these Addi Turbo circular needles is super easy. Just thread your yarn through the cord and start knitting as you normally would. The smooth nickel coating helps the yarn move freely, so you can work quickly. When it comes to maintenance, keep them away from sharp objects to avoid scratching the coating. You can clean them with a soft, dry cloth. Remember to double - check the needle sizes, as some of the smaller ones don't follow standard US sizing. Also, since the US 36 and US 50 tips are plastic, handle them gently to prevent breakage.