The Pittsburgh SAE and Metric Pass-Thru Socket Set is a 21-piece set of high-quality sockets designed for automotive use. With a focus on metric measurements, this set caters to a wide range of applications. The pass-thru design allows for easy access to nuts and bolts, making it a convenient and versatile tool for mechanics and DIY enthusiasts alike. Manufactured in China by Pittsburgh, a trusted brand in the industry, this socket set is a valuable addition to any toolbox.