Using these addi Turbo Circular Needles is a breeze. Just thread your yarn through the needle and start knitting as you normally would. The smooth nickel coating will help the yarn glide, so you can work faster. When you're done with your project, gently remove the yarn from the needles. To keep your needles in top shape, store them in a dry place away from sharp objects that could scratch the coating. Be aware of the non - standard sizing for some of the smaller needles and the plastic tips on US 36 and US 50. Don't expose the plastic tips to extreme heat as it may damage them.