In 
Out6x16x5 Rubber
Product Overview
The Halo series of bearings are a high quality steel/chrome bearing with black rubber shields. These bearings have been tested and proven by many racers.
6x16x5 Halo bearing by Avid Racing Concepts is a popular bearing for vehicles/makes like the T-Maxx, E-Maxx, Tamiya's, and others.
