Using these 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 glide along, so you can work quickly and comfortably. When it comes to sizing, double - check the notes we've provided to make sure you're using the right size for your project. For maintenance, keep the needles clean by wiping them with a soft cloth after each use. Avoid bending the cords too sharply to maintain their flexibility. If the needles get dirty, you can gently wash them with mild soap and water and dry them thoroughly. And remember, although the US 36 and US 50 needle tips are plastic, they're very durable and add a fun sparkle to your knitting.