Cascade Lead Came is made from a very closely controlled alloy that combines a fine grain structure with high strength. Cascade starts with 100% pure lead to which they add exacting quantities of tin, antimony, copper and bismuth. The came is still over 99% pure lead, but you can now stretch the lead to the breaking point and still maintain a fine grain structure. This alloy also prevents oxidation, which makes for easier soldering and allows for a longer life without tarnishing. Sold in 2 x 36" strips or carefully coiled 72" (original) length - please specify your preference at checkout.