The Snap-On FXWP4 3/8″ Drive Wobble Extension is a high-quality, chrome-plated socket extension made in the United States. With a length of 4 inches and a specialty drive type, this extension is designed for use with standard 3/8 inch sockets. The Snap-On brand is well-known for producing durable and reliable hand tools, making this extension a valuable addition to any automotive tool collection. It comes as a single item and does not come with a warranty.