A base hub to spin an inserted 12mm outer diameter, 8mm inner diameter tube with reduced friction.
This hub utilizes a F12-21M thrust bearing and a 6001 ball bearing:
https://www.amazon.com/dp/B07QKKY9V2?psc=1&ref=ppx_yo2ov_dt_b_product_details
https://www.amazon.com/dp/B07FDXPVLP?psc=1&ref=ppx_yo2ov_dt_b_product_details
Designed to be mounted to a base via four M4 screws to support a spinning 12mm x 8mm x 1000mm Carbon Fiber Tube.
Comes in two printable parts: the hub base and the tube insert that the tube slides on to, which spins on top of the thrust bearing.
The author marked this model as their own original creation.