• Heat treated and precision ground.
  • Parallel to .0003 on all sides.
  • Up to .0003 over allowance for nominal lapping.
  • Standard blocks have 23 holes; 5 holes tapped 3/8-16, 18 drilled through. Blocks with no holes are also available.
  • Sold in pairs.
  • Standard sets are supplied in a cardboard box. Wood box available at an additional cost.

123 Block Set

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