Using these ChiaoGoo double pointed needles is easy. Just thread your yarn onto the needle and start knitting your favorite patterns. Whether you're making socks, hats, or small amigurumi, these needles are up to the task. When using, be careful not to apply too much force as it might bend the needles. To maintain them, simply wipe them clean with a soft cloth after each use. Store them in a dry place to prevent rusting. These needles are a great addition to your knitting collection and will serve you well for many projects.