Using these ChiaoGoo RED Lace Circular Needles is a breeze. Just start by picking up your yarn and casting on stitches as you normally would. The smooth surface of the needles and the red - nylon - wrapped cable make it easy to move the yarn around. For different projects, you can choose the appropriate length and size from the wide range available. When it comes to maintenance, simply keep them clean and dry. Avoid exposing them to harsh chemicals or extreme temperatures. And remember, the US 17 needles have a non - standard size, so take that into account when planning your projects.