Using addi Turbo Circular Needles is easy. First, select the appropriate needle size for your knitting project. Thread your yarn through the cord and start knitting as you normally would. The nickel - coated surface will help the yarn move smoothly, speeding up your work. When it comes to maintenance, simply wipe the needles with a soft cloth after each use to keep them clean. As for the non - standard sizing, always double - check the actual size according to the label. Be gentle with the plastic needle tips of US 36 and US 50 to avoid breakage. Store your needles in a dry place to prevent rusting of the metal parts and damage to the cords.