shaft 1. mtl:sus303 2. eco-friendly 3. size: ... , Mitutoyo fineness instruments for inspection, EDM, high speed CNC machine, Sodick wire EDM, etc. 3)Quality control equipments: roundness ... Precision/tolerance:0.0001mm5)Surface processing technic : heat treatment, induction hardening, carbonadoing, others optional can be as requirements6)Material: iron/ ... of over 1 million pieces per month. knife shaft