A used Mikuni carburettor body which I think is for the left hand cylinder but please check to confirm this for yourself .. it is stamped S2U-O on the clamp which I believe makes it correct  for a Kawasaki 350cc S2A triple .. although I have listed it as body only it does come with the throttle stop screw and the pilot jet which I have unscrewed and refitted to ensure it was,nt seized in .. please study the pictures to ascertain its condition for yourself