The Controller itself features a custom-molded PCB enclosure, a rotary encoder for easy temperature setting, upgraded accuracy in measuring the tip’s temperature, and a safety setting that keeps the screen on until the coil is safe to touch. After you set your temperature to about 700º F, simply plug in the Flat Coil with a braided kevlar sleeve for extra durability. The coil ends in a titanium Universal Nail that can be used in either a female or male configuration, giving you full compatibility with most concentrate rigs.