Fishbones Heavy Duty Charcoal Grate Upgrade for size Large Big Green Egg (R). The Fishbones Charcoal Grill Grate is Made in the USA of heavy duty 304 Grade Stainless Steel and replaces the cast iron grate in size Large Big Green Egg (R). Dramatically increases air flow for starting your grill faster and burning hotter with less charcoal. Prevents build-up of ash on charcoal grate and improves both high & low temperature control. Stop wasting time and charcoal trying to get your Large BGE hot!