Precise 5″ Long Steel Grade B Gage Block – 4101-0831

• This is a must have for a CNC machine set-up.
• Rectangular shape with two holes.
• Made of the highest quality tool steel.
• Meets or exceeds Federal GGG-G-15C Standards.
• Surface hardness is HRC 64.
• Tolerance in microinches is +50/-30.
• Complete with Manufacturers Calibration or Certificate.

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