The Mac Tools 7/8 combo wrench Knuckle-Saver is a durable and thick hand tool designed specifically for automotive use. With a 12 point drive type and SAE measurement system, this single item wrench from Mac Tools is a reliable choice for professionals and DIY enthusiasts alike. The innovative design of the Knuckle-Saver feature adds extra protection for the user’s hands, making it a valuable addition to any toolbox.