Made from a 110 annealed copper. Excellent conductor of electricity and heat. Ductility and malleable attributes makes metal working easy. Precision Brand® shim stock is widely used in the following applications: tool and die set up; alignment, new machine assembly, machine repair and maintenance, mounting of motors, pumps and other machines, short run and prototype work; along with a variety of other industrial uses. It is especially useful for pilot production runs where material accuracy and economy are important. All Precision Brand® shim products are manufactured under rigorous quality control standards to assure high accuracy and tight tolerances.