Using your addi Turbo Circular Needles is easy. First, pick the right size needle for your yarn and project. The nickel - coated surface allows the yarn to move smoothly, so just start knitting as you normally would. When you're done with your project, gently remove the needles from the knitted piece. As for maintenance, keep the needles clean by wiping them with a soft, dry cloth after each use. Store them in a safe place to avoid bending or damaging the tips. Remember, some of the smaller sizes don't follow standard US sizing, so double - check before you start your project. And be careful with the US 36 and US 50 plastic tips, as they can break if mishandled.