Using these addi Turbo circular needles is a breeze. Just thread your yarn onto the needle and start knitting as you normally would. The nickel coating helps the yarn glide easily, so you can work on your projects faster. When it comes to sizing, keep in mind that some of the smaller sizes are different from standard US sizing, so double - check the labels. After use, gently clean the needles with a soft cloth. Avoid using harsh chemicals that could damage the nickel coating or the plastic tips of US 36 and US 50 needles. Store them in a dry place to prevent rusting or damage to the cords.