Specifications:
CNC Machined Aluminum
Size: 1.7''
OD: 1.73in / 44mm
Width: 1.76in / 44.9mm
Negative Offset: 0.71in / 18.26mm
Hex Size: 12mm
Each Weight: 1.48oz / 42g

What's Included:
2x Chaos Semi Truck Rear Wheels w/Spiked Caps
2x Spiked Caps

Notes:
This is for Two Rear Dually Wheels. In order to do a trailer with two axles or a truck with two rear axles, you will need to buy two of this item.
Front Wheels are (Z-W0154)
Fit Tamiya Semi Trucks
Hubs can be hand tightened only. There is no special tool for this.
Due to many different methods to design Tires and Wheels, RC4WD has no control over other manufacturers products. So they can only tell you that RC4WD Tires and Wheels work together. In some cases their Wheels and Tires will work with other brand Wheels and Tires, but they can not guarantee the outcome.
For these wheels, they recommend you add glue to secure the tires in place.