Description
1-2-3 Block Sets (Matched Pair)
- Precision ground and case hardened on all six sides
- Hardness: 56 - 60 RC
- Parallelism: 0.0002"
- Squareness on all sides within 0.0001"
- Matched accuracy of 0.0002"
- Accuracy of 0.0003" per inch
- 23 holes: 5 tapped ( 3/8" - 16)
- 18 untapped