1-2-3 TiN Coated Block Set ~ Heat treated and case hardened to HRC 55 to 60. ~ Hardened and precision ground on all 6 sides of each block. ~ Accuracy with squareness on all sides within .0002″ per inch. ~ 23 holes consisting of 5 tapped holes that are 3/8″-16 for clamping and 18 untapped holes. ~ Cross drilling design gives minimum weight and maximum strength. Heat treated and case hardened to HRC 55 to 60. Hardened and precision ground on all 6 sides of each block. Accuracy with squareness on all sides within .0002″ per inch. 23 holes consisting of 5 tapped holes that are 3/8″-16 for clamping and 18 untapped holes. Cross drilling design gives minimum weight and maximum strength.
