Produced from sawmill residue, 100% softwood/hardwood, no additives. Briquettes measuring 10 – 120mm length x 55mm diameter. Bags are each 20kg. Easy to use and can be used like coal, piling the fire up and shutting the flue down to slow the release of heat. Very quick and easy to start fire from, giving off a lot of heat, quickly. Very clean to use, producing little ash which can also be used as a fertiliser.