This is often a lightweight 17mm aluminum ball-race rollers being available these days to tune your Mini 4WD car. These rollers offer less fat and just a little boost in rate, alongside superior durability and silky-smooth rotation.
• 17mm Lightweight Aluminum Ball-Race Rollers x2
• Eight holes in each roller result in you fat of 0.81 grms, a saving of around 0.25 grms per roller.
• small elements for accessory are included.
• integrated 520 ball bearings provide smooth roll.
• suitable for Mini 4WD and Mini 4WD professional cars. Some figures may require modification.
