● Made of alloy steel and grinded precision. Good precision of Straight angle. ● There are screw holes on the panel for fixing mode and fixture. ● Parallel Precision: 0.003mm /100mm ● Right-angle precision: 0.004mm /100mm ● Material:YK30. Hardness:HRC58°±2 MCL-LA34 MCL-LA44 MCL-LA46 MCL-LA62 MCL-LA65