Charcoal discs are commonly used for burning resins, powdered herbal blends and loose incense. 
How to use : 
The disc should be placed in a fireproof bowl or mini cast iron cauldron before lighting,  and let the charcoal disc heat up and glow, before sprinkling incense, resin or dried herbs onto it.
Dimensions - H13.5cm X W3cm X D1cm
Please note : This is for burning purpose only.
KEEP OUT OF REACH OF CHILDREN AND PETS:
DO  NOT TAKE INTERNALLY