The Evolve+ Cartridge is the heart of the Evolve+. It consists of the Evolve Cartridge Base, the QDC quartz dual heating element with splash cap and shell/mouthpiece. The dual quartz heater head offers the utmost of efficiency while being able to handle a wide range materials. The innovative coil cap will prevent any thin oils from leaking while vaping, guaranteeing not a bit goes to waste. Yocan's Evolve+ Tank utilizes 510 threading, allowing you to match this device with most standard boxes and batteries.