Packaged in rolls of ten pieces these charcoal discs make the burning of dried herbs, resins, or incense powders quick & easy. They light quickly & will burn for around an hour before turning to ash that can be then thrown away. The discs have a little indentation in the top to keep your resin in place, & the burning disc must be used on a heatproof dish. To use :- Remove a disc from the roll & place in or on a heatproof dish, light the edge of the tablet with a match or lighter, the tablet will then light across the surface. Once lit you can place your resin or powder into the little well in the top. 10 x Charcoal discs 3cm Diameter Burn time around one hour