The Snap-on 3/8 Extensions are high-quality hand tools designed for automotive use. Made in the United States, these chrome-finished extensions are 4 and 6 inches long, perfect for reaching tight spaces and deep cavities. The standard SAE system of measurement and specialty drive type make them compatible with a variety of sockets and tools. With no warranty but a single item included, these extensions are a reliable and durable addition to any mechanic’s tool collection.