00001 Ultra Precision 1-2-3 Blocks 2pcsPair 1 Hole

[Hole Size]: 0.5″.

[Accuracy]:

• Size: +/- 0.0001″;
• Squareness: 0.0003″;
• Parallelism: +/- 0.0001″;
• Height Accuracy in Pair: +/-.0001″.

[Durable Material]: Made of hardened tool steel and all six sides are precision ground.

[Application]: These steel blocks can be used for set-up, layout, and inspection jobs. Perfect for machinists, woodworkers, metalworkers, and more.