Asimeto Precision Inspection Gage Ball Sets

• Meets all grade 25 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.