Using your addi Turbo Circular Needles is a breeze. First, choose the right yarn for your project. Then, start knitting as you normally would. The nickel coating helps the yarn glide smoothly, so you can work faster. When you're done, gently remove the yarn from the needles. As for maintenance, keep the needles in a dry place to prevent rusting. Be careful with the plastic tips of the US 36 and US 50 needles, as they can break if dropped or bent. And remember, due to the non - standard sizing of some smaller needles, double - check the size before starting your project.