This is the Dubro #450TL Treaded Lightweight 4.5" (114mm)
Diameter Wheel.

Features

TL series foam interior yet has a tough and rugged exterior skin
8-spoked grey plastic wheel
Shock absorbing
3/16" (5mm) axle diameter and can be drilled to 1/4" (6mm)

SPECIFICATIONS:
Tire diameter: 4.5" (114mm)
Tire width: 1.325" (33mm)

Includes

1 4.5" wheel

Comments

Writing on tire "DU-BRO" and "4.50 T.L. (114mm)" AXY 3/6/96