This 13mm Tube Insert is designed for use with our King Kone Tube Conversion Kit, in order to provide you with interchangeable options to pack more sizes of tubes with your existing King Kone pre-roll machine(s). Go beyond the standard pre-roll cone sizes and offer 12mm pre-rolled tube products with the help of this 13mm tube insert, your King Kone machine, and a King Kone Conversion Kit. We recommend ordering additional trays as well as tray sizes to not only better automate your pre-roll business, but also to get more SKUs out of expensive machinery you’ve invested in.