Precision meets reliability with the SPI 6 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 6 mm diameter, this gage ball provides dependable reference measurements for quality control processes and dimensional verification tasks. Part #14-816-3 from SPI's trusted line of measurement tools delivers the accuracy professionals demand for critical inspection work. Perfect for industrial settings where precise dimensional measurements are required, this gage ball maintains its dimensional stability even with repeated use, making it an indispensable addition to any quality assurance toolkit.