Fowler 52-438-777-0 Gage Ball Set, 50 Pieces
- Ball gage: Features sphericity within 0.000025" and surface finish to 1.5 microinches.
- Accurate Readings: Chrome steel ball set with Grade 24 accuracy and AFBMA certificate.
- Durable Material: This gage ball set is made of ground-lapped chrome steel hardened to 63RC.
- Set Includes: A case for storage and ball pair sizes of 0.125, 0.14, 0.156, 0.18, 0.21, 0.25, 0.28, 0.31, 0.34, 0.375, 0.4, 0.43, 0.46, 0.5, 0.53, 0.56, 0.59, 0.625, 0.656, 0.68, 0.71, 0.75, 0.81, 0.87, 0.93, and 1 inch.