munirater Parallel Block Set 2 x 4 x 6 Blocks 23 Holes Matched 0.0003 Inch Machinist Fit for Milling Machine

Parallel Block Set 2 x 4 x 6 Blocks 23 Holes Matched 0.0003 Inch Specification: Parallel block set 2 x 4 x 6 0.0003 inch Features: Hardened steel heat treated and case hardened to hrc 57 to 62 Cross drilling design allows for efficient use of lower weight with maximum strength accuracy with squareness on all sides within 0.0003 per inch Be used outside a vise utilizing the pre-drilled holes their applications are expanded by bolting them together Package Includes: 1 Pair precision gage block 2 x 4 x 6