10:1 16:1 20:1 24:1 30:1 36:1 Planetary Reducer 30N.m for 60 mm Servo Motor This hyperlink is for ratio of Stage 2 (ratio 16/20/24/30/36:1), if want Stage 1 or Stage 3, examine different links in shop or contact us.We also have sequence of 57mm, 80mm, 86mm, 110mm, 130mm ... planet reducer .Thicker gears and quality axleLow noiseHigh torqueLong existence characteristicsThe specification of 60mm Geared Stepper Motor Planetary gearbox:Gear ratio 10:1 16:1 20:1 24:1 30:1 36:1 belong to stage-2:The measurement of 60mm planetary gearbox:More pictures by cellphone with out PS( the motor seems greater than the photo):