Gamakatsu hooks are constructed with a unique tempering process and high-carbon steel for superior strength and durability. These heavy wire hooks are designed to withstand strong superlines. They're great for flipping or pitching around a structure. Per 25. Sizes: 2/0, 3/0, 4/0, 5/0. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Hooks.