Coghlans Fire Discs are an ideal fuel source for starting campfires or wood stoves. Made of cedar and highly refined wax, they are designed to light easily and to burn hot. Since most meals take less than 30 minutes to cook, they are also a perfect solution as an emergency source of heat for cooking. Each disc scored on one side to break easily into 4 parts.Weight: 3.5 oz. (99.2 g)Dimensions: Height: 1 (2.5 cm)Diameter: 4 (10.2 cm)Burn Time: 30 minutesWARNING:The combustion of wood, charcoal, and other fuels can expose you to chemicals including carbon monoxide and soot, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.