Features:
The wheel hex hubs are capable to lengthenwheel distance for ensuring a stable driving, which suits 1/10 RC crawler such asAxial SCX10 TRX4.Reducing absent space to unnecessary shaking in the car driving, they transfer pressure flexible. Therefore, they are the excellent fittings to upgrade your RC car.
Made of high quality metal
Easy to install and durable
It can extend or reduce the wheel distance
6mm,9mm,12mm,15mm,18mm,22mm height are available

Specifications:
Material: Aluminum Alloy
Quantity: 4PCS/set
Color: Black/ Silver
Wheel Hex: 12mm
Thread Diameter: 3mm
Diameter of Center Hole: 6.7mm
Height: 6mm/ 9mm/ 12mm/ 15mm/ 18mm/ 22mm

Package List:
4pcs/set * RC Car 12mm Wheel Hex hub adapter

Note:
These are only for the wheel hex which is 6-hole style, like 1.9 2.2inch VP rims, not include the screws.
The height of 6mm is not fit to TRX4.