Three Kings Charcoal Tablets Three Kings’ Quick Light charcoal is disc-shaped measuring 40 mm in diameter. The tabs can be used for burning incense and ignite much quicker than other charcoal tabs on the market. This makes them highly convenient and easy to use. Each roll contains 10 individual tablets. Make sure to store the charcoal tabs in a dry place. To Use: Remove a tablet from the sealed roll and place in a censer or heat proof dish. Light the edge of the tablet with a lighter, match or candle. The tablet will then light across its surface. The tablet should be left to burn out and cool in censer. Each Tablet lasts approximately 40 minutes. Always use on a heat proof surface. Keep away from flammable materials and never leave unattended.