Achieve precision in your machining and measurement tasks with this matched pair of SPI Steel Parallels. Each parallel measures 6" long x 1-5/8" high x 1/4" thick, crafted with exceptional accuracy to maintain 0.0003" and 0.002" parallelism tolerances. These high-quality steel parallels are essential tools for setup work, inspection, and layout applications in machine shops and quality control departments. The matched pair ensures consistent height and parallelism when supporting workpieces during machining operations or when used as spacers for measurement tasks. Their precision-ground surfaces provide reliable reference planes for comparative measurements and part positioning. These durable steel parallels from SPI, a trusted name in precision measurement tools, will maintain their accuracy through years of professional use in demanding industrial environments.