1-2-3 BLOCK SET MATCHED PAIR WITH 23 HOLES PER BLOCK (3402-0005)

1-2-3 Precision Matched Pair 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 consists of 5 tapped holes that are 3/8"-16 for clamping and 18 untapped holes. Cross drilling design gives minimum weight and maximum strength. Shipping Weight: 2.05 lbs