Why I waited so long to give these hooks a try I don't know. I absolutely love these hooks! I literally crocheted for hours on end after receiving this set, which says a lot as I also suffer from repetitive wrist injury as many others do. These hooks are extremely lightweight, which is very nice. I delved into my yarn stash and tested these hooks on a wide variety of yarns ranging from heavy worsted acrylic to fingering-weight 100% wool and novelty yarns, and these hooks crocheted them all with ease. I experienced no yarn splitting, and the hooks grabbed the yarn excellently. The hook moves smoothly through the yarn yet is not too slippery. The point of the hooks enters into stitches effortlessly, including back ridges of long starting chain.