(Rolled & Bagged) Hobby Came. Started with 100 percent pure lead exacting quantities of Tin, Antimony, Copper and Bismuth are added. The came is with over 99 percent pure lead but can now be stretched to the breaking point still maintaining a fine grain structure. This alloy also prevents oxidation, making for easier soldering and allowing a long shelf life without tarnishing. “⚠ #2 WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.”