SPI Precision Metric Inspection Gage Ball Set - 10-194-9

Meets all grade 24 AFBMA standards.

Chrome alloy steel, hardened to 63 HRC.

Surface finish to 1.5 Micro-Inches.

Within 0.0001"/0.0025 mm of actual size.

Spherical accuracy within 0.000025"/0.0006 mm.

Metric - includes: 25 pairs in Metric sizes 1mm to 25 mm in 1 mm increments.