... ISO9001:2008 4. Tolerance:+/-0.0001 high quality stainless steel worm gear with good priceSpecifications:1) Suitable for various ... instruments for inspection, EDM, high speed CNC machine, Sodick wire EDM, etc. 3)Quality control equipments: roundness meter, ... tolerance:0.0001mm5)Surface processing technic : heat treatment, induction hardening, carbonadoing, others optional can be as requirements6 ...