Using these addi Turbo circular needles is easy. Just thread your yarn through the cord and start knitting as you normally would. The smooth nickel coating helps the yarn glide, so you can work faster. When you're done with your project, gently remove the yarn from the needles. To keep the needles in good condition, store them in a dry place away from sharp objects that could scratch the coating. Remember, the smaller needle sizes have non - standard US sizing, so double - check before starting your project. And be careful with the plastic tips on the US 36 and US 50 needles, as they can break if handled roughly.