Achieve precision measurements with these SPI Gage Block Cylindrical Jaws. Featuring a 2.945-inch overall length and 0.512-inch jaw thickness, these cylindrical jaws provide exceptional accuracy with a 0.5-inch radius. The pair offers remarkable precision with radius accuracy of 0.00003 inch and pair accuracy of 0.00004 inch. Specifically designed for use with rectangular gage blocks, these high-quality measurement tools are sold as a pair of two pieces. The cylindrical jaws are manufactured to exacting standards by MSC Industrial, ensuring consistent performance in dimensional measurement applications. These specialized jaws are essential for professionals requiring ultra-precise measurements in machining, quality control, and inspection environments. Their durable construction and precise specifications make them a valuable addition to any metrology toolkit.