This vintage Craftsman 6" extension is a high-quality tool that is perfect for any DIY project. With a 1/4" drive size and a surface finish of chrome, this extension is sure to get the job done efficiently and effectively. It is a single item and comes with a manufacturer part number of VV 43531, making it easy to find and purchase. The socket type is standard and the system of measurement is SAE, which makes it easy to use and understand. This extension is made in the USA and comes with an unspecified length warranty. It is a great addition to any tool collection and is perfect for those who enjoy vintage tools.