Pair of Ultra-Precision 1 X 2 X 3-Inch Parallel Blocks Set 23 Holes 0.0001 Preci
Product includes:A pair of ultra-precision 23-hole parallel block set, 5 hexagonal screws and a hexagonal wrench with plastic case. 0.0001 precision for 23 holes. Accuracy: 0.0001 precision for 23 holes.