Ultra Precision 123 Block Set With 4 Pairs 2 X 1 X 3 Inch Hardened Steel Precision Blocks 23 Holes Tolerance.0002 Inches 3/8-16 UNC Tapped Holes Machinist Grade Accuracy For Tight Fits And Repeats Shars

Ultra precision 1-2-3 block set with 23 holes and taps
✔️ Hardened steel 2 x 1 x 3 in blocks, 23 holes, tight tolerances

These ultra precision 1-2-3 blocks are hardened steel machinist fixtures designed for precise alignment, squaring, and repeatable setup in milling and drilling operations. Use with clamps, vices, and gauge blocks for accurate reference in workshops and fabrication shops.

✅ 4 pairs included in the set
✅ 23 holes total in the set
✅ Five 3/8-16 UNC tapped holes
✅ Block dimensions 2 in x 1 in x 3 in (L x W x H)
✅ Hardened steel construction for wear resistance
✅ Tolerance ±0.0002 inches for tight fits

💡 What is a precision 1-2-3 block set used for in a workshop? Quick handy explanation.

- reference for squaring, alignment, and fixture setups in milling and drilling - tapped holes enable precise mounting and pins for repeatable positioning - hardened steel and tight tolerance reduce misalignment over time - compact, stackable design fits in tool boxes and workbenches