The 3/16 x 5/16 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.
3/16 x 5/16 x 1/8 Flanged Halo bearing by Avid Racing Concepts is the standard clutch bearing for the RC10GT and Nitro Dual Sport. Check your manual for the correct size for your vehicle if you are not certain.