The 2-hole parallels are made from fine quality tool steel that is stress relieved against distortion
These parallels are precision ground and hardened and are complete with a fitted wood case
The tolerance for the parallels is parallel to 0.0003 on 2 sides, top & bottom and the dimensions are within 0.001" allowance
The 23 hole 1-2-3 blocks are heat treated and case hardened to HRC 55 to 60 and are hardened and precision ground on all 6 sides of each block
These blocks are accurate with squareness on all sides within .0002" per inch
Description
Many metalworking products contain metals that are included in the latest Prop 65 warning. Exposure to the elements can be harmful. May cause cancer and reproductive harm.
