Cheap And Discounts Nema34 Planetary Gearbox Ratio 5:1/10:1/20:1/50:1/100:1 For 86mm Flange Stepper Motor 14 Input 16mm Output Step-down Reducer CNC Wholesale. Buy Directly From Merchant Shop1103856396 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.