Wulf Mods Flow Auto Flow 510 Voltage BatteryGo With The Flow Unleash your clouds like never before with the Wulf Mods Flow Auto Flow 510 Voltage Battery! Use your Flow in traditional Auto Draw Mode or switch things up with Auto Flow Mode for a propulsive blast of silky vapor that is truly ferocious. This means when flip up the top on your Auto Flow, your Flow is going to turn into a mini fog machine shooting out vapor like a flame thrower for a truly one of a kind way to experience your clouds.