The Mac Tools 6534DIA SAE Hexagonal Die 3/8″-16 NC – 1″ Shank is a high-quality hand tool designed for use in vehicle maintenance and repair. With a durable construction from the reputable brand MAC, this die is specifically designed for SAE measurements and features a 1″ shank size. This single item is essential for professionals and DIY enthusiasts alike who are looking to create precise and accurate threaded connections in their projects.