A tasteless, orderless, light weight natural rock with all the desirable proprieties of the ideal radiant. Has the look and produces the char effect of burning charcoal, but is not consumed as a fuel like charcoal. Rocks can be reused over and over again for gas fired broilers without the undesirable grease buildup. Charbroiler Rocks heat completely through and spreads heat evenly over the grill surface. Each bag will cover about 3 square feet. - Rock Size - Length 2-1/4 in - Width 1-3/4 in - Sold per case; (2) 9-1/2 lb bags per case