I loved my Lykke interchangeable needles until they started feeling gritty to the surface. My teeth hurt when sliding the needles against each other to knit/purl, the needles “crunch” together. They are rough even after buffering them. I purchased them in Nov. 2020, kept them in it own case, and used them sparingly. I need to replace them and I am afraid my next set will not be a Lykke one. I gave 2 stars because the beautiful case is lasting longer than the needles.