This is the optional Team Integy Gold Evo V Steering Wheel Set for Futaba, Traxxas, HPI, Airtronics, HiTec and KO Transmitters. FEATURES: Aluminum construction Replace ordinary transmitter steering wheels with a custom looking R/C car wheel with disc brake detail Foam finger grip INCLUDES: Team Integy Gold Evo V Steering Wheel Set with Adapters and Mounting Hardware REQUIRES: Removing stock steering wheel from transmitter SPECS: Diameter: 2.2" (55mm)