Manufacturer Part Number: 637-7590|Parallel Type|Length (mm)|Length (Inch)|6Height (mm)|Height (Inch)|1/2Parallelism|Thickness (mm)|Thickness (Inch)|1/4Material|Tool Steel; Tool SteelNumber Of Precision - Ground Sides|Parallelism (Decimal Inch)|Features|Squareness|0.0005" Per 1"Accuracy (mm)|Accuracy (Decimal Inch)|Hardness|58 HRCUNSPSC Code|27111800PSC Code|