Precision meets reliability with the SPI 7 mm Diameter Chrome Steel Gage Ball. Manufactured to Grade 25 Accuracy standards, this high-quality dimensional measurement tool is essential for calibration, layout, and machine setup applications. The chrome steel construction ensures durability and consistent performance in various measurement scenarios. With its precise 7 mm diameter, this gage ball provides the accuracy needed for critical dimensional inspections and reference measurements. Part of SPI's trusted line of measurement tools, this gage ball (Part #14-817-1) is designed for professionals who require dependable measurement standards. Perfect for quality control departments, machine shops, and precision manufacturing environments where dimensional accuracy is paramount.