Using these ChiaoGoo Knit RED Circular Needles is easy. Just pick the right size for your project and start knitting. The smooth surface helps the yarn move freely, so you can work faster. When you're done, gently remove the yarn from the needles. To keep them in good shape, store them in a dry place away from moisture. Avoid dropping them on hard surfaces as it might damage the tips. If they get dirty, you can wipe them with a soft, dry cloth. These needles are durable, but handle them with care to enjoy long - term use.