... Tolerance:+/-0.0001 high quality stainless steel worm gear with good priceSpecifications:1) Suitable for various automotive, electronic, ... , automatic lathes, automatic milling machines, centreless grinders, instrument lathes and accessories like drills, mill devices, Mitutoyo ... , projector meter, microscope, gear-test meter, surface measuring meter and so on4) Precision/tolerance:0.0001mm5)Surface ...