Herb Iron turns any pipe into a vaporizer. Simply plug-in, press & hold the button for 6-8 seconds until the ceramic heating element becomes red-hot, and easily hover the tip over your bowl to vaporize. Since the heating element heats up quickly, don't hold the button for more than 15-seconds to avoid burning your herbs instead of vaporizing. The Herb Iron completely cools down between 4-5 minutes, yet avoid touching the tip to prevent burns. Herb Iron operates on 110V, so a power converter will be required when using 220V.