Using these Jimmy's SmartStix Double Pointed Needles is a breeze. Just pick up your yarn and start knitting your favorite pattern. The color - coded intervals make it easy to measure your work as you go. You can use them to measure your gauge by wrapping the yarn around the needle to see how many wraps fit in an inch. When you're done knitting, simply remove the yarn from the needles. To keep them in good condition, avoid dropping them on hard surfaces as they're made of lightweight aluminum and could get bent. Wipe them clean with a dry cloth if they get dirty. Store them in a safe place, like a knitting case, to prevent them from getting lost or damaged.