BL-123 Pair of 1" x 2" x 3" Precision Steel 1-2-3 Blocks

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Feature

Precision ground. Case hardened.
Cross-drilling design for extra strength and minimum weight.
Five 3/8-16 tapped holes are provided for clamping.

Description

Heat treated above 48 Rockwell "C"; .0001 to .0003 over allowance for nominal lapping. Squareness of all sides is within .0002 per inch.