The Halo series of bearings are a high quality steel/chrome bearing with rubber seals. These are commonly used in T-Maxx's and Tamiya's

5x11x4 Halo bearing by Avid Racing Concepts is the standard bearing for nitro clutches. Check your manual for the correct size for you vehicle if you are not certain.

• METRIC: 5mm (Inner) x 11mm (Outer) x 4mm (Width)
• STANDARD: 0.19685" (Inner) x 0.43307" (Outer) x 0.15748" (Width)