13-670-5 SPI 1-2-3 Block Set

  • $ 43.33
  • Save $ 31.38


Matched 1-2-3 Block Set

Features include...

  • Hardened Steel to RC 55-60, ground to surface finish 6-16 microinches.
  • Squareness of all sides within 0.0001" per inch
  • Five tapped holes (3/8" - 16), 18 untapped holes (3/8" dia.)