Description
Product description This is a matched set (2 each) of professional quality 1-2-3 blocks They are precision ground and case hardened to RC 55-62 on all six sides. They contain one untapped 1/2 inch through hole. Overall size is within +/- .0002". Flatness and parallelism are within .0002". Squareness on all sides to within 0.0002". Pairs are matched to a tolerance of 0.0002". There are 2 pieces per set. Matched pair 1-2-3 blocks includes 2 blocks Professional quality precision ground steel and case hardened to RC 55-62 on all six sides Squareness on all sides within 0.0002" One single 1/2” untapped through hole Overall size is within +/- .0002"; Flatness and parallelism within .0002".