This 2 piece alloy hex adapter set is specified for use with the TAMIYA TT02B platform to provide a repeatable wheel mounting interface for wheels that accept a 12x9mm hex. The components are intended as wheel hex carriers to maintain consistent wheel positioning on TT02B-compatible hubs.
Functionally these alloy adapters locate the wheel on the axle stub and transmit drive torque into the wheel assembly. They are not bearings or drive shafts, but they do provide a fixed datum for offset and track adjustments during detailed setup work.
Installation notes: the adapters mount in pairs onto the hub/axle arrangement found on TT02B chassis types using a 12x9mm hex. Secure with the original wheel nut or suitable retaining hardware, verify clearance and fit, then check wheel runout after final torque to confirm correct alignment.
Application guidance: use these hex carriers when evaluating different wheel offsets, swapping wheel profiles, or fine tuning track width to achieve predictable wheel placement during chassis setup. Treat them as precision-fit mounting parts rather than load-bearing structural upgrades.