... :2008; tolerance: +/-0.0001mm high precision rc worm gear for toy car Specifications:1) Suitable for various automotive, electronic, telecommunications, ... optical projectors, Mitutoyo fineness instruments for inspection, EDM, high speed CNC machine, Sodick wire EDM, etc. 3)Quality control equipments: roundness meter, ... output of over 1 million pieces per month. high precision rc worm gear for toy car