The 5x14x5 Metal (605-2RS) Halo series of bearings are a high quality steel/chrome bearing with metal shields. These bearings have been tested and proven by many racers.
5x14x5 Metal (605-2RS) Halo bearing by Avid Racing Concepts is a popular bearing for Tekin Pro4, Novak, and Neu-Castle motors. Check your manual for the correct size for your vehicle if you are not certain.