These wheel hubs are used to narrow the track width of the EB48SL, which results in a nimbler handling buggy. This works best on smaller tight tracks where maximum steering is needed. These can also be used on the SCT410 to allow the use of standard 1/8th scale wheels and tires without changing the overall track width from standard SCT wheels. TKR5580 stub axles are required.Compatible withEB48SLSCT410 and SCT410.3 (Must be used with our EB48SL axles part number: TKR5580)Includes(2x) narrow 17mm wheel hubs and (2x) 2.5x13mm pins per package. (2x) packages required to complete vehicle.