I was so enamored when I found out about how well they hook up that I started pouring my own and bought 7000 hooks of different sizes, every one a sickle. The hook is built and then washed in an acid which removes a layer of the hook, making the point exceptionally sharp. This also may be why some of the barbs are smaller on some. I have landed bas up to 5lbs and crappie over 2lbs on #6 and #8 sickles. One of the best developments to my knowledge.