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 will help the yarn move along effortlessly. 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, the smaller needle sizes don't follow standard US sizing, so double - check the actual size before starting your project. Also, be gentle with the plastic needle tips of the US 36 and US 50 sizes to prevent breakage.