The RBC (Redux Bottom Coil) is a bottom coil clearomizer based on the look of the Redux Clearomizer, but it is a completely different design. The RBC uses the bottom coil to provide a nice warm vapor, with a superb clean flavor, and reduced wicking issues. Also different is the body design. There is no longer a removable drip tip at the top; instead, it is more of a molded clear uni-body design that unscrews from the bottom for filling and to replace the coils.
To fill the RBC, unscrew the bottom atomizer head, hold the tank upside down and fill it with about 1.5 mL of liquid. With the tank mouthpiece end-down, screw the atomizer head back on. To replace the heating element, unscrew the bottom of the clearomizer. The heating element unscrews from the base. These use the same coils as the Tumbler tank we currently carry.