The Pin Gage VT .391 (+) Steel from Field Tool Supply is a high-precision measuring tool designed for verifying hole sizes in various applications. Made from robust steel, this pin gage offers exceptional durability and accuracy. With a diameter of .391 inches, it is ideal for checking tolerances in machining and assembly processes. This tool meets stringent industry standards, ensuring reliable performance in quality control. Its compact design makes it easy to handle and store, making it a vital addition to any professional toolkit.