Half-Fast Wire Shafts are made of tempered stainless steel wire for strength and corrosion resistance. They are the perfect choice for making in-line spinners, spinner baits, spreaders and other wire tackle items.The wire has been pre-straightened by machine and is ready to use (there will be a certain amount of cast, or slight curvature in some wires even with machine straightening).WARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov