The 5 Sta-Bil 360 Protection Ethanol Fuel Treatment and Stabilizer is a pack of 5 corrosion inhibitors specifically designed for automotive use. This product, manufactured by STA-BIL, comes in a volume of 12 fl oz per unit. The treatment helps protect fuel systems from corrosion and ensures optimal performance in engines. Ideal for regular use to maintain fuel system health and efficiency, this product is a must-have for any car owner looking to safeguard their vehicle's fuel system against damage.