This is the Dry Herb Coil replacement for Randy’s Chill vaporizer. It is a ceramic plated coil within a quartz cup. Ceramic is the best material to use and it provides optimal flavour. It’s a good idea to have a spare atomizer before yours needs to be replaced. There is no specific length of time that your coil will last, as there are a number of factors to take into account. How often you use and clean the device and the product you put in the chamber will affect the period with which it lasts.