LEGO Brown Wheel Rim Ø8 x 6.4 without Side Notch (4624) | Brick Owl - LEGO Marketplace
BrickLink - Part 4624c02 : LEGO Wheel 8mm D. x 6mm with Black Tire 15mm D. x 6mm Offset Tread Small (4624 / 3641) [Wheel & Tire Assembly] - BrickLink Reference Catalog
LEGO Part 4624 Wheel 8mm Diameter x 6mm [Light Bluish Gray] (6194808, 4211506) | iBricktoys: LEGO shop guide and database