Material: magnesium alloy + high strength industrial plastic + stainless steel Size: 78*29mm, small and convenient to carry around Rugged and durable: Your thin magnesium bar with a dedicated squeegee can withstand the elements up to 20,000 times. Whether it's wet, cold or both, the massive size ensures optimal grip and handling - almost foolproof. Safe and reliable: safe from fire and non-spontaneous combustion, the shell has a layer of flame retardant, the whole high temperature burn without fire, can be placed at home with peace of mind Wilderness survival essential device: as the best of military equipment, it can only be good for your emergency equipment. Flintstones are a must-have in your survival toolbox.