Invented by a priest and a chemist, Char-Lite Products Self-Lite Charcoal briquettes are specifically designed for church use. They light immediately when touched by flame and are reliable and burn slowly for 30+ minutes. They stay lit even in wind! Each briquette has an unusual "star-saucer" shape that comfortably holds up to three spoonfuls of incense. A single briquette is 44mm and each shrink-wrapped box holds 5 sealed trays of 20 briquettes for a total of 100 briquettes. Made in USA. 4 lbs.