1 X 2 X 3 Matched Ultra Accuracy Parallel Blocks Set, 23-Hole 0.0001 Inch Alloy Steel, 123 Parallel Block Set With Screws And Hex Key

Fowler 52-439-031-0, Steel 1-2-3 Blocks

5 MATCHED PAIRS PRECISION 23 HOLES 123 0002", 1 2 3 Blocks,2 4 6 Blocks Blocks,1 2 3 Block Set

1 X 2 X 3 Matched Ultra Accuracy Parallel Blocks Set, 23-Hole 0.0001 Inch Alloy Steel, 123 Parallel Block Set With Screws And Tools, Hex Key