One of the most discreet of the UNI collection by Yocan, the UNI Twist Universal Portable Mod fits easily into pockets and purses. With its retractable cartridge system, vape tanks can be raised and lowered as needed. These sturdy vape batteries have a zinc alloy exterior that is non-scratch with a smooth metallic texture, and the UNI Twist is the first box mod to feature an adjustable diameter dial to fit atomizers of different widths! Made to work with almost any size of oil cartridge, the UNI Twist has adjustable height and width capabilities to ensure comfortable security every time. The magnetic cartridge adapter allows for hassle free magnetic attachment.