robot wheel for my gear boxes and pololu gm series germinators

this is a real simple 80mm robot wheel for my gear boxes and pololu GM series germinators so far my high torque gear box seems the best for robots
https://www.thingiverse.com/thing:3092638

i am working on reducing the first small gear box with more stages but mean time the high torque gear box seems to be the best all around gear box