This is a pair of the Dubro Treaded Lightweight 7" Diameter Wheels.
Vintage style wheel
TL Series foam interior yet has a tough and rugged exterior skin
16-spoked solid white plastic wheel
3/16" (5mm) axle diameter and can be drilled to 1/4" (6mm) maximum
Tire Diameter: 7" (178mm) Tire Width: 1" (25mm)
Two Tread Lite 7" Wheel
– If you need more information, use these Dubro resources –