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 easily, so you can work on your project without any hassle. When it comes to care, keep them in a dry place away from moisture to prevent the nickel coating from getting damaged. Since some of the smaller needle sizes don't follow standard US sizing, double - check the size before you start your project. And be gentle with the plastic needle tips on the US 36 and US 50 needles to avoid any breakage.