The 3/16 x 3/8 x 1/8 Halo series of bearings are a high quality steel/chrome bearing with metal shields. These bearings have been tested and proven by many racers.
This is the common bearing used in the TC3, NTC3, and XXX-S for axles.
We suggest that these are used in onroad conditions due to the performance benefits of a metal shield and the lack of dirt on the track.