SPI 10-193-1 Precision Chrome Steel Gage Ball Set: 52 Balls, 1/8 inch to 1" Diameter
Measuring Insert Probe 2mm Carbide Ball 4mm Shank for Fowler/Trimos Height Gauges 279 918011
Calibration Ball Ceramic Ball Stainless Steel Rod M8/M10 φ20/25mm Use for Mitutoyo CMM Brown Sharp CMM (M8157 φ25 L157mm)