Using these Jimmy's SmartStix Double Pointed Needles is a breeze. Start your knitting project as you normally would with double - pointed needles. When you need to measure your work, simply use the color - coded markings on the needles. You can easily measure the length or check your gauge. As for maintenance, keep them away from sharp objects that could scratch the aluminum. You can clean them with a soft, dry cloth. If they get dirty, a mild soap and water can be used, but make sure to dry them thoroughly to prevent rust. Store them in a safe place, like a knitting needle case, to avoid losing any of the 5 needles in the set.