toy 0.1 plastic module gears single /multi cavity injected mould 0.005-0.03mm ... precision customed surface treatment toy 0.1 plastic module gears Specifications:1) Suitable for various automotive, electronic, telecommunications, mechanical ... . 3)Quality control equipments: roundness meter, projector meter, microscope, gear-test meter, surface measuring meter and so on4) Precision/tolerance:0 ...