2-4-6 Blocks 23 Holes Matched Pair Ultra Precision 0.0002" Machinist 246 Jig Fit for Milling Machine

Brand new Heat treated and case hardened to HRC 57-62 Made of precision-grade tool steel hardened and ground on all 6 sides of block Accuracy and squareness on all sides within 0.0002" Cross drilling design allows for efficient use of lower weight with maximum strength