Sources for 43.33:1 Compound Planetary Gearset, NEMA 17 Mount, No Hardware

Compound Planetary Gear Box (37:1 or 49.3:1) NEMA 17, No Hardware.  (https://www.thingiverse.com/thing:2054378)
Compound Planetary Gearbox (38.75:1 or  50.4) No Bearings, No Hardware! (https://www.thingiverse.com/thing:2071318)
1:246 Gearbox (https://www.thingiverse.com/thing:7390)
43.3:1 Compound Planetary Gearbox For Robotic Arm Project! (https://www.thingiverse.com/thing:2101218)
