Fender Custom Shop 56's Relic These are screws for a 6-in-line peghead, taken from a Stratocaster. The material is likely steel. Due to the relic specification, there is considerable rust. There are no issues with use. I can't guarantee it, but based on experience, the rust should come off to some extent if polished, but I've left them as is. They will be shipped in a padded envelope. Please understand that these are used items before purchasing.