Using these addi Turbo Circular Needles is easy. First, thread your yarn through the needle tip and start knitting as you normally would. The smooth nickel coating helps the yarn move effortlessly, so you can enjoy a seamless knitting experience. When it comes to maintenance, keep the needles clean and dry. You can use a soft cloth to wipe them down after each use. Be careful with the smaller - sized needles as they don't follow standard US sizing, so double - check the actual size before starting your project. And since the US 36 and US 50 needle tips are plastic, avoid using excessive force to prevent breakage.