Make of high quality Bearing Steel,Deep Groove Ball Bearings.
Special no contact dual rubber seals to seal out dirt while providing friction free performance.
Synthetic micro bearing grease ensures that the bearings will run smooth throughout their lives without ever needing relubrication.
Engineers its bearings to perfection, which ensures a perfect fit for your R/C vehicle. You can expect longer runtimes and faster acceleration, as well as higher top-end speeds.