This is a bit tricky to print, given the size:

1) Put it into the Elegoo or similar wheel.
2) Stick the Tamiya hex axle in.
3) it's supposed to break in half when you do that, and the two parts should give you good friction between the axle and the wheel.

Print in PLA.

(It's the tiny black part, if it wasn't obvious!)

Did this because sometimes you find one size cheap, sometimes you find the other, and the Tamiya double motor drive is a nice piece of kit.

Be sure to check out my other work at https://www.robots-everywhere.com/

MakerBot

MakerBot Replicator 2

No

No

0.3mm