waltyotur 1 Matched Pair Ultra Precision 2-4-6 Blocks 23 Holes 2 * 4 * 6 Block 0.0003 Machinist 123 Jig Fit for Milling Machine Used for Set-up,Layout and Inspection Jobs
Material: Made of precision-grade tool steel hardened and ground on all 6 sides of block, heat treated and case hardened to HRC 55-62.
Accuracy: Overall size is within +/- .0003; flatness and parallelism on all sides within .0001/1.
Strength: 23 holes include (5) 3/8-16 threaded hole clamping and (18) non-threaded hole. The cross-drilling design allows effective use of lower weight with maximum strength.
Uses: Used for set-up, layout and inspection jobs.