Each tube contains 10 charcoal discs.
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Care must be taken when using these as they do become very hot. Place within a cast iron cauldron, soapstone incense burner or an abalone shell (with salt or sand) always ensure the holder is placed onto a hard surface - ideally slate, marble etc rather than wood or a cloth covered surface as it can get hot.
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Light the discs using tongs to hold and light from underneath and when the charcoal disc is glowing and disc is starting to turn white, the resin/herbs are placed on top to emit a wonderful scent.