Introducing the DUO 510 Cartridge Cartridge Concealer, the cutting-edge addition to HoneyStick's collection, crafted specifically for dispensaries and retailers who cater to savvy Cartridge enthusiasts. This revolutionary device offers dual cartridge simultaneous vaping, providing unparalleled flexibility and meeting the demands of connoisseurs. Crafted to fit most 510 thread cartridges, whether pre-filled or for self-filling, the DUO accommodates cartridges up to 10.7mm in diameter and 70mm in height, guaranteeing seamless compatibility for customers. Say goodbye to complex button operations. The DUO operates solely through a draw-activated mechanism, ensuring an intuitive and hassle-free vaping experience with every draw.