Get an extra oil can exclusively made for your DaVinci. You will never know when you need it. The Da Vinci Oil Can is for your grinds and essential oils! Each DaVinci Vaporizer includes 2 Oil Cans, one empty for your grinds, the other with a high temperature swab inside to absorb your essential oils. Extra Oil Cans are available for purchase, in case two isn't enough. These oil cans and lids hold up well over time.