Description
Ultra Precision 1-2-3 Block Set, 23 holes, 1 Pair Set
- Heat treated and case hardened to HRC 58-62 on 6 sides.
- With 23 holes, consists of 5 tapped holes that are 3/8″-16 for clamping and 18 untapped holes.
- Cross drilling design gives minimum weight and maximum strength.
- Each set contains two matched blocks in pairs.
- Packed in a fitted strong case.
- Parallelism: 0.0002″
- Size range: 0.0002″
| Item# | Squareness |
| EG28-0420 | 0.0001″/1″ |
| EG28-0421 | 0.0003″/1″ |
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