The Cadweld 25 Weld Metal Shots are exothermic welding compounds specifically designed for bonding copper to cast iron. Made by the brand CADWELD in the United States, each pack contains 16 shots of welding material. These shots are packaged in an open box for easy dispensing during welding projects, providing a reliable and efficient solution for various welding applications. Pre-Owned. Open box. Please see photos for more detail.