... .1-3.0 0.0001precision customed surface treatment POM spur gear with shaft Specifications:1) Suitable for various automotive, electronic, telecommunications, mechanical ... , etc. 3)Quality control equipments: roundness meter, projector meter, microscope, gear-test meter, surface measuring meter and so on4) Precision/tolerance ... output of over 1 million pieces per month. POM spur gear with shaft