... 2008 4. Tolerance:+/-0.0001 high quality stainless steel worm gear with good priceSpecifications:1) Suitable for ... instrument lathes and accessories like drills, mill devices, Mitutoyo concentric circles, optical projectors, Mitutoyo fineness instruments for inspection, ... iron/aluminum, copper, alloy, carbon steel, 18CrMnTi,20CrMnTi,20Cr,20CrV,1045 steel, others optional7) Products range: standard ...