2-4-6 Blocks Matched Pair Hardened Steel 23 Holes (2x4x6) 1 Pair Ultra Precision Machinist Milling

• 23 holes consists of 5 tapped holes that are 5/8-11 for clamping and 18 untapped holes
• Precision ground steel and case hardened on all six sides
• Squareness on all sides within 0.0002
• Cross drilling design gives minimum weight and maximum strength
• These steel blocks are suitable for all kinds of the machine tools

Dimensions- 2" x 4" x 6", 18.3 lbs. weightHeat treated and case hardened to HRC 57-62Made of precision-grade tool steel hardened and ground on all 6 sides of blockAccuracy with squareness on all sides within 0.0002" per inch.23 holes includes (5) 5/8"-11 threaded holes for clamping and (18) untapped holesCross drilling design allows for efficient use of lower weight with maximum strength