Single Hole 1-2-3 Blocks Set
For precision grinding, layouts, etc.
Drilled hole size is .500 -.501.
Accuracy with squareness on all sides within .0001 per inch.
Hardened to RC 58-60 and ground to surface finish from 6 to 10 micron inches.
Overall dimensions are 1 X 2 X 3".
Sold as a matched pair.
Shipping Weight: 4 lbs