10 charcoal disks for burning powdered, loose or resin incense. The disks are 1.25" in diameter and have a cupped upper surface to hold the incense. The charcoal disc gets very hot. Use a non flammable surface to place the heated charcoal disc on. Light the charcoal with a lighter or match, when it starts to spark, put it in the burner. Let the whole charcoal begin to glow hot before adding any resin. Then sprinkle on the resin a little bit at a time. If you add too much or cover the charcoal completely, you might put out the charcoal. Also, most natural resin incenses smell better when burned in small amounts at a time. Let the charcoal burn down completely, make sure it's all ash before throwing out because it could set trash on fire. Store unused charcoal in a zip-lock bag or in a jar, because they won't burn well if they collect humidity from the air.