RC miniature Ball Bearings are machined components that include an outer ring, inner ring, balls, retainers, shields and snap rings.

Application:

5x10x4mm black seals 1/8th nitro clutches ball bearing MR105-2RS is the standard bearing for 1/8th nitro clutches, rc car kit.the new Mugen MBX8 kit is using the 15x21x4 bearings for the inside wheel hubs again and changed to a 6x13x5 for the gear box pinion gears