Using addi Turbo Circular Needles is a joy. First, choose the right needle size for your project. The nickel - coated surface makes it easy to slide the yarn on and off. Start knitting as you normally would, and you'll notice how smoothly the yarn moves. When it comes to storage, keep them in a dry place to avoid rust on the metal parts. Be careful with the plastic needle tips of US 36 and US 50 sizes; don't expose them to extreme heat as it may damage the plastic. Also, remember the non - standard sizing of some of the smaller needles and refer to the provided size information when picking the right one for your project.