findmall 1 x 2 x 3 Inch Blocks Matched Pair 1/2" Single Hole Matched Pair with One Hole Hardened Steel Accuracy Ground Machinist 123 Blocks Set Up Blocks Fit for Accuracy Grinding Layouts

Package: 2 blocks

This is a matched set (2 each) of professional quality 1 x 2 x 3 inch blocks

They are accuracy ground and case hardened to RC 55-60 on all six sides

They contain one untapped 1/2 inch through hole

Overall size is within +/- 0.0002"

Flatness and parallelism are within 0.0002"

Squareness on all sides to within 0.0003"

Pairs are matched to a tolerance of 0.0002"