ALL-CARB 1 X 2 X 3 Inch Blocks Set Matched Pair 123 Blocks Hardened Steel One Hole Precision Ground Machinist Set Up Blocks

Feature: 1. This matched pair of blocks is ground to tolerances of .0001. 23 holes, 5 tapped 3/8-16 TPI and 18 plain 2. Precision ground and case hardened on all six sides 3. Squareness of all sides is within .0002 per inch. 4. Used for set-up, layout and inspection jobs 5.Has 23 holes with 5 holes tap to 3/8-16 threads for clamping and 18 untapped holes This matched pair of blocks is ground to tolerances of .0001. 23 holes, 5 tapped 3/8-16 TPI and 18 plain Used for set-up, layout and inspection jobs