Saber Vape Coils come in packs of two. One of them is the ceramic donut coil and the other is the dual quartz coil. Saber Vape Coils will last you a long time if you take proper care of them. Both the donut coil and dual quartz coil are great to use. There isn't a big difference between both coils in terms of vaping experience. It boils down to preference at the end of the day.