The All-City 2-For-1 Dropout is a sliding dropout system consisting of replaceable dropout plates and fixing hardware. Designed for use with 12mm thru-axles and flat-mount brakes, it is compatible only with select All-City models. Allows riders to convert from a geared to single-speed setup or vice-versa -Compatible only with specific All-City models, 2-For-1 2.0 is not compatible with original 2-For-1 frames -Drive Side, for single-speed setup -Allows riders to convert from a geared to single-speed setup or vice-versa -Compatible only with select All-City models