Train Wheel RC, Spoked with Technic Axle Hole and Counterweight, Blind and Flanged Driver, 3 in Bag (Multipack) : Part 85489 | BrickLink
LEGO part 85489 - Black Train Wheel RC Train, Spoked with Technic Axle Hole and Counterweight, Blind and Flanged Driver, 3 in Bag (Multipack) at BrickScout