123 Block Set

Precision 123 Blocks Set

Matched pair of 1" x 2" x 3" blocks.

Each block is precision ground on all surfaces.

Case hardened to HRC 55-60.

Surface finish from 6 to 16 microinches.

Squareness on all sides to within 0.0001" per inch.

Features 23 holes: 5 are tapped 3/8-16" the other 18 are untapped thru holes.

Supplied in fitted plastic case.

Part Number 123-PP