FIREHOLE STICKS “ Outstanding barbless, chemically sharpened hooks. All Firehole Sticks are formed with a wire diameter which is a slightly heavier gauge than what would be considered œstandard. The wire for each hook is high strength carbon steel which is then tempered through a process which ensures flexibility while maintaining high strength. Many of the hooks are also forged which adds an additional level of strength to the hook. Each hook is chemically sharpened. All hooks have a black nickel plating.