A circular needle is not just a circular needle, and who hasn't been freaking out over knitting with an old steel needle that just twists and turns? You don't have to now, because you will become addicted to knitting with these and you will use them for all your knitting. We assure you that this is a super product.
The transition between the needle and the wire is often a really big problem for many knitting needles. It is so difficult when the stitches get stuck in the transition, and you have to constantly help them onto the needle! You just don't have to here.
The knitting needle you buy here has a fixed wire - the wire is therefore not replaceable. That's how we like it best. A needle is a needle, and you know it will in no way come apart in the transition. You don't have to tighten the wire to the stick with the possibility of not getting it tightened properly, nor do you need to carry spare parts.