It is made of rubber,metal,can withstand a great weight
Not easy to be wear and tear.
It is very flexible.
Wheel OD: 80mm
Wheel wide: 24mm
Bearing ID: 6mm
Axles: 40mm
color:Black
Package include:
2 set wheels With screw pin Gasket
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.