Achieve precision in your machining and measurement tasks with this matched pair of SPI Steel Parallels. Each parallel measures 6 inches long by 3/4 inch high by 1/2 inch thick, providing a stable reference surface for setup and inspection work. Engineered with exceptional accuracy, these parallels feature impressive parallelism tolerances of 0.0003 inch and 0.002 inch, ensuring consistent and reliable results for your most demanding applications. The durable steel construction offers excellent wear resistance and dimensional stability over time. These parallels come as a matched pair, allowing for versatile positioning and support capabilities in various machining operations. Perfect for toolmakers, machinists, and quality control professionals who require dependable reference surfaces for precise measurement and workpiece positioning.