Using your addi Turbo Circular Needles is easy. Start by threading your yarn through the cord and onto one of the needle tips. You can then begin your knitting project as you normally would. The smooth nickel coating will help the yarn move easily across the needles. When it comes to maintenance, keep the needles clean by wiping them gently with a soft cloth after each use. Avoid using harsh chemicals as they may damage the coating. Be aware of the non - standard sizing of some of the smaller needles, so you choose the right size for your project. Also, handle the plastic needle tips (US 36 and US 50) with care to prevent breakage.