Swift Lite Charcoal has ten disks in each pack. They are non-toxic and chemical free. These small charcoal disks are non-toxic and chemical free. Made especially for burning powdered incense, herbs and resins, they're different than the coal briquettes used for barbecuing. NOTE: BE SAFE! Please use common sense when using these disks. They become very hot. Use in a heat resistant mini-cauldron or pot.