The Snap-on Tools 1/4″ Drive 11″ Length Knurled Extension Adapter TMXK110 is a high-quality hand tool designed for automotive use. Made in the United States, this extension adapter is specifically designed for standard sockets and fits 1/4″ drive sizes. It is a single item set that includes a specialty SAE and metric system of measurement, making it versatile for various applications. The knurled design provides a secure grip, while the 11″ length allows for added reach and leverage. This product is ideal for professionals and car enthusiasts looking for reliable and durable tools to assist with automotive maintenance and repairs.