Get more out of your King Kone pre-roll machine with this tube conversion kit, which is compatible with tube inserts to pack pre-rolled tubes. To get the most out of your conversion kit, purchase multiple inserts of varying sizes to pack wider diameter or narrower pre-rolled tubes. We also recommend pairing the King Kone Conversion Kit with a metering tray, if you want to be more precise for weight compliance, and for even distribution of sifted material into each cone.