Using your 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 move freely, so you can work on your project with less effort. When using, be aware of the non - standard sizing for some of the smaller needles. Also, handle the plastic tips of the US 36 and US 50 needles gently to avoid breakage. For maintenance, you can wipe the needles with a soft cloth after each use to keep them clean. Store them in a dry place to prevent rusting on the metal parts and to keep the plastic tips in good condition. Happy knitting!