Using these addi Turbo circular needles is a breeze. Just thread your yarn through the needle and start knitting as you normally would. The nickel coating helps the yarn glide smoothly, so you can work faster. When it comes to sizing, double - check the notes about the non - standard sizes for smaller needles. As for maintenance, keep the needles clean and dry. Avoid bending the cords too much to keep them flexible. Store them in a safe place, away from sharp objects that could damage the snag - free joins and the plastic needle tips if you have the US 36 or US 50 ones.