Nema34 90 Degree Gearbox Planetary Gearbox Speed Ratio 3-100:1 DC Motor Reducer Planetary Gear For Servo Motor 10 Gearbox ,Low Noise - RATIO 7_12.7MM INPUT

1Stage (L1): 3:1 / 4:1 / 5:1 / 7:1 / 10:1 2Stage (L2): 15:1 / 20:1 / 25:1 / 30:1/ 35:1 / 40:1 / 50:1 / 70:1 / 100:1 Input size: 12.7mm/ 14mm/ 16mm/ 19mm Output Shaft: 25mm Backlash Precision: Less than 10 Arcmin (L1) / Less than 15 Arcmin (L2)