Using these Addi Turbo circular needles is easy. Just thread your yarn onto the needle and start knitting as you normally would. The nickel coating helps the yarn move smoothly, so you can work faster. When you're done with your project, gently clean the needles with a soft cloth to keep them in good condition. Remember, some of the smaller sizes have non - standard US sizing, so double - check before starting your project. Also, be careful with the plastic needle tips on the US 36 and US 50 sizes to avoid cracking them.