This is the ST Racing Concepts 17mm Hex Conversion Kit for the Traxxas 1/10 scale 4wd Slash 4x4, Stampede 4x4 vehicles.
FEATURES
CNC machined aluminum construction, red in color Allows the use of 1/8 scale buggy wheels on the Slash and Stampede 4x4, and GT8 slick or rally tires on the Traxxas Rally car