The parallels in the set are made from fine quality tool steel stress relieved against distortion and are precision ground and hardened
Each parallel has 2 holes and the dimensions are within 0.001" allowance
The parallels have a tolerance that is parallel to 0.0003 on 2 sides, top & bottom
The blocks are also hardened and precision ground on all 6 sides of each block
These blocks have accuracy with squareness on all sides within .0002" per inch and the cross drilling design gives minimum weight and maximum strength
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.
