Anytime Tools 123 Blocks Matched Pair Ultra Precision Hardened Steel 23 Holes 1x2x3 123 Set wBolts and Case Machinist Milling

MATCHED PAIR, Professional Quality Tool Set 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) Includes: Matched pair 1-2-3 blocks 5 3/8"-16 bolts Allen wrench Protective Case