Upgrade your toolbox with the Mac Tools 3/8" Drive Universal Joint Socket Adapter - X3U. This high-quality adapter is designed for use with a variety of socket types, including swivel and universal. With a sturdy construction and reliable performance, it is an essential tool for any automotive enthusiast or mechanic. This adapter is specifically designed to fit 3/8" drive sockets and includes an innovative swivel feature that allows for greater flexibility and ease of use. Whether you are working on cars, trucks, or motorcycles, the Mac Tools 3/8" Drive Universal Joint Socket Adapter - X3U is a must-have for any serious DIYer or professional mechanic.