New open box. The Craftsman 5/16” x 3/8″ Dr Socket CMMT 44329 is a high-quality hand tool designed for automotive use. This specific socket features a 12 point drive type, making it easy to tackle tough jobs with precision. With a lifetime warranty and chrome surface finish, this single item set ensures durability and reliability. Made by Craftsman, a trusted brand in the industry, this standard socket is a must-have for any mechanic or DIY enthusiast looking for a reliable and long-lasting tool for their toolbox.