Train Wheel RC, Spoked with Technic Axle Hole and Counterweight, 37 mm D. (Flanged Driver) : Part 85489b | BrickLink
This is what the wheels I printed were for. I'm trying to recreate a GWR 1400 tank in a 6 wide scale. The wheels work well enough but are nowhere close to
LEGO pieces train wheels small x8 1.4 cm wheels 1x4 studs wheel holders x4 | eBay
Amazon.com: LEGO Parts, Bricks, and Pieces - Black Train Parts Combo Pack (2 X Buffer Beam with Sealed Magnets and 2 X Train Wheel RC, Holder with 2 Black Train Wheels) : Toys & Games
Resources – Brick Train Depot
Train Wheels | Holger Matthes
Big Ben Bricks LLC
New LEGO Train Wheel Car Assembly - Black Base 6 x 24 (wheels w/Plastic Pins) | eBay
Amazon.com: LEGO Parts and Pieces: Black Train Wheels for RC Trains x4 : Toys & Games