MATCHED PAIR, Professional Quality Tool!

Hardened and precision ground 1" x 2" x 3" Block Set. This matched pair of blocks is ground to tolerances of .0003". 23 holes (5 tapped 3/8"-16 TPI and 18 plain).

Features:

• Precision ground and case hardened on all six sides
• Squareness on all sides within 0.0001"
• Surface finish from 6 to 16 microinches
• 23 through holes (5 tapped 3/8"-16 TPI and 18 plain)