Each atomizer in this 5 pack of replacement Yocan Evolve-D Coils features an innovative dual coil pancake design that vaporizes dry herb fast and thorough. With a resistance level of 1.0 ohm, the Yocan Evolve-D Coil creates large clouds of clean tasting, flavor-rich vapor. Replacing the coil is quick and easy with a threaded connection. Dry herb lays on the spiral heating element, which heats in seconds. These coils are only compatible with the Yocan Evolve-D vaporizer.