Low odor. Frees corroded nuts + bolts. Penetrates rust. Works on contact. Professionals rely on WD-40 Specialist to get the job done right! The proprietary blend of ingredients works fast to free rusted bolts and other stuck parts. The capillary action penetrates into tight crevices, threads, and seams to break the bonds that hold stuck parts together. Helps prevent rust and corrosion from re-forming and leaves behind a lubricating layer. 50-state VOC compliant. wd40.com. WD-40 safety hotline 1-888-324-7596. Please recycle when empty. Mfd. in the USA for WD-40 Company.