Achieve precision in your machining and measurement tasks with these SPI Steel Parallels. This matched pair of parallels measures 6 inches long by 7/8 inch high by 1/4 inch thick, providing reliable support and alignment for your workpieces. Engineered with exceptional accuracy, these parallels feature impressive parallelism tolerances of 0.0003 inch and 0.002 inch, ensuring consistent results in your dimensional measurement applications. The durable steel construction delivers long-lasting performance in workshop environments. These parallels come as a matched set, allowing for perfect symmetrical setup in various machining operations. Ideal for toolmakers, machinists, and quality control professionals who require dependable reference surfaces for inspection, layout work, and precision machine setup. Part #13-211-8 from MSC Industrial's trusted SPI line of measurement tools.