Toy Train | New Elementary: LEGO® parts, sets and techniques
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
LEGO 75955 Hogwarts Express Set Parts Inventory and Instructions - LEGO Reference Guide