The Inhibitor VCI Pro Chips are a safe and economical way to protect fishing tackle, tool boxes, small parts bins and any other small metal items needing protection from rust and corrosion. Each chip has been treated on both sides with The Inhibitor's Volatile Corrosion Inhibitor (VCI) that releases a non-toxic vapor which blends with moisture and oxygen, stopping rust and corrosion in its tracks. The rust preventing vapors are non-toxic and environmentally safe. Even if the VCI Pro Chips get wet, the Advanced Vapor Technology is able to penetrate into the smallest cracks and crevices providing complete protection for up to 1 year. 20 chips per package. Each chip measures 1" x 3.75".