The Lookah 710 Replacement Quartz Coils come in four different styles.  Type A is a quartz dish coil and this one is designed with flavor as the king.  Type B is the dual hole quartz coil and this one was designed to give you the best vapor production.  Type C is a square quartz coil that is designed to conserve your concentrates.  Type D is a second dual hole quartz coil in a different style. These coils come individually or in a 5-Pack.  They are compatible with the Seahorse X, the Swordfish, the Q7 Mini, the Dragon Egg, and the Unicorn Mini.