The product is a single Standard 3/8 inch drive and 1/2 inch drive socket with a 1/2 inch 11/16 inch size. Made by Williams, a reputable brand in the industry, this chrome-finished socket is designed for use with SAE measurement systems. It is a 12-point drive type tool, perfect for automotive applications requiring precision and reliability. With a manufacturer part number of B1222 and ST 1216, this high-quality socket is a versatile and essential addition to any hand tool collection.