AT-123TC

Tin Coated 1-2-3 block set

  • Titanium nitride coated surface provides extra wear and corrosion resistance
  • Presicion ground & heat treated to 55-62 rc
  • Parallel ti .0003 on all sides; up to .0003 over allowance for nominal lapping
  • Has 23 holes - 5 holes tapped 3/8-16, 18 drilled through.
  • Sold in pairs