The Snap-On USA 3/8” Drive 6" Long Chrome Friction Ball Extension Adapter (MPN FX-6) is a high-quality hand tool designed for automotive use. Made in the United States by Snap-on, this extension adapter features a specialty drive type with a 3/8" drive size and a 6" length. Its chrome surface finish and friction ball design make it durable and reliable for various mechanical tasks. Additionally, it comes with a single unit and is suitable for both SAE and metric systems of measurement. This product is a valuable addition to any mechanic's toolbox, offering both performance and longevity.