The Yocan UNI Box MOD features everything you have come to appreciate in Yocan products: ease of use, affordability, functionality, and practicality, and now we bring customization and personalization to the next level. The UNI Box MOD can adapt to any type, size, and length of any oil cartridge on the market. The key is its adjustable knobs and an adjustable lever to adjust the height of the cartridge level so your oil cartridges will achieve a perfect fit making for a perfectly comfortable vaping session.