Using these addi Turbo Circular Needles is a breeze. First, pick up your yarn and start knitting as you normally would. The nickel - coated surface helps the yarn move smoothly along the needles. When you're done with your project, gently remove the finished piece from the needles. As for maintenance, you can wipe the needles with a soft, dry cloth to keep them clean. Remember, the smaller needle sizes have non - standard US sizing, so double - check the actual size before starting your project. And be careful with the US 36 and US 50 needle tips as they're made of plastic, so avoid bending them too forcefully.