Using these Addi Turbo circular needles is easy. Simply thread your yarn onto the needle and start knitting as you normally would. The smooth nickel coating will help the yarn slide easily, so you can work on your project more quickly. When it comes to care, you can gently wipe the needles with a soft cloth after each use to keep them clean. Store them in a dry place to prevent rust or damage. Just be aware of the non - standard sizing of some of the smaller needles and the plastic tips of the US 36 and US 50 sizes.