Using these Jimmy's SmartStix Double Pointed Needles is a breeze. Just start knitting your project as you normally would. When you need to measure your work, use the color - coded intervals on the needles. To measure gauge, simply count the stitches and rows over a set length marked by the color - coding. Remember, these needles are made of lightweight aluminum, so handle them gently to avoid bending. After use, keep them in a dry place to prevent any corrosion. You can clean them with a soft, dry cloth to keep them in good condition.