3-6v DC spur gear motor for auto window curtain, safe box, storage box, robot,electric game machine 3-6v DC spur gear motor for auto window curtain, safe box, storage box, robot,electric game machineReduction ratio:1/35.42At max. efficiency(6v):speed 90rpm,torque 400g.cmGear box: Φ24.4mm, Motor size: Φ24.4mmx24.1mm,shaft diameter 3mm PGM-24 dc gear motor