These pop top, child resistant joint tubes are manufactured precisely to fit any king size pre-roll. Made in the USA, our joint tubes provide a convenient way for both medical patients and recreational consumers to transport pre-rolls safely and efficiently. The sealed vial of these doob tubes increases the shelf life of the product inside immensely. They are made of medical grade, BPA free, FDA approved materials and meet CPSC requirements for child safety. These doob tubes are great for promoting head shops, marijuana dispensaries, cannabis clubs, the weed industry and more!