This is the Dubro Treaded Lightweight 5" Diameter Wheel.

Features

TL Series Foam Interior yet has a Tough and Rugged Exterior Skin
8-Spoked Gray Plastic Wheel
Shock Absorbing
3/16" (5mm) Axle Diameter and Can be Drilled to 1/4" (6mm) maximum

Specifications

Tire Diameter: 5.5" (127mm)
Tire Width: 1.5" (38mm)

Includes

One Tread Lite 5.5" Wheel

Comments

Writing on tire "DU-BRO" and "5.00 T.L. (127mm)"