Using these ChiaoGoo Knit RED Circular Needles is a breeze. Start by choosing the right size and length for your project. Thread your yarn onto the needle and begin knitting as you normally would. The smooth surface makes it easy for the yarn to slide, so you can work quickly and efficiently. When it comes to maintenance, keep them in a dry place to prevent rusting. Avoid dropping them on hard surfaces as it could damage the tips. After each use, you can gently wipe them with a clean, dry cloth to keep them in good condition. And always store them properly to avoid bending or warping the cable.