We have tested these hooks and they are like crocheting with crystal clear ice cubes, yet warm in your hands. Slick, easy to work with. The clear color makes it so much easier to crochet on darker colors of yarn, and easier on more detailed and intricate work. What a wonderful concept! We absolutely love the ease in working with these, as well as the lighter weight, so as not to make it too heavy on your hands. These Susan bates crystal ice crochet hooks are beautiful clear crochet hooks that make working with dark colored yarns a breeze. These hooks look like crystal. They are made from durable acrylic. These hooks famous in line head helps reduce wrist motion for fatigue free crocheting and helps you maintain a more consistent gauge. Protect and store this fine set of hooks in the handy vinyl case. This set includes sizes G, H, I, J, and K (4 mm, 5 mm, 5.5 mm, 6 mm and 6.5 mm).