These are for use with the Lookah Unicorn e-rig. This pack consists of two (2) atomizer bases and four (4) replacement quartz dishes. The atomizer base screws into the atomizer slot on the Unicorn e-rig. The interchangeable quartz dish sits on a pancake coil in the bottom of the atomizer base. This coil evenly heats the dish for even vaporization of your concentrates. The best results are achieved when using the auto/preheat function of the Unicorn electric dab rig.