This replacement Quartz Nail from Dr. Dabber is designed specifically for their revolutionary battery-powered eNail, the Boost Portable eRig. For use with wax concentrates, this quartz crystal nail ensures the cleanest, purest, truest-tasting dabs possible. As quartz is an inert material, it burns clean and doesn't give off any sort of residual taste, allowing you to experience the true flavor profile of your wax concentrates.