Features and BenefitsProtects against rust and corrosion 40x longer than the competition*Protects metals for one yearExtends life of tools and equipmentIdeal on equipment in storage50-State VOC CompliantWD-40 SpecialistCorrosion Inhibitor is an anti-rust spray ideal for preventative maintenance and use in extreme environments such as high humidity. It provides non-drying protection that stays where you spray it. It has a long-lasting formula to protect metal parts by blocking rust and corrosion for up to 1 year outdoors or 2 years indoors. A must have for corrosion protection.