Using these ChiaoGoo double pointed needles is a breeze. Simply thread your yarn onto the tapered tip and start knitting. When working on your project, make sure to hold the needles at a comfortable angle for smooth stitches. As for maintenance, keep them away from sharp objects to avoid scratches on the satin - sheen finish. After use, store them in a dry place. If they get dirty, you can gently wipe them with a soft cloth. These needles are recyclable, so when they're no longer usable, you can recycle them to be eco - friendly.