The USC 21335 Feather-Rite Quality Lightweight Auto Body Filler is a 3-quart pack of cavity sealer suitable for automotive use. Made in the United States, this product carries a California Prop 65 Warning due to the presence of chemicals like styrene and toluene, which are known to cause cancer or birth defects. It is a high-quality product from the trusted brand USC, ensuring durability and effectiveness in filling and sealing cavities in auto bodies. Please note that this product does not come with a warranty.