The Vintage Armstrong 12pt 1/2" Drive Socket SD-1228 7/8" is a single item socket designed for use with SAE measurements. Made by the renowned brand Armstrong in the United States, this socket features a 12 point drive type and a 1/2 inch drive size, making it compatible with a variety of automotive tools and supplies. With a size of 7/8 inches, this vintage socket is a valuable addition to any hand tool collection, offering quality and durability for automotive maintenance and repair tasks.