L BRAND forge coke is made from coal, producing the cleanest, lowest clinker, and hottest burning forge fuel available. No smoke, no smell, no soot. L BRAND Forge Coke is especially processed and sized to be used in blacksmith and farrier forges. Sized at 1/4 x 1 inch, max 5% plus 1 inch, 12% minus 1/8 inch. Carbon 91%, Vol. 1%, Ash 8%, Sulfur 0.7%, Moisture 12% max.