Zerust VC2-1/VC2-1/2-1 Rust Preventing Vapor Capsule, Yellow
Zerust vapor capsule emits an invisible vapor that forms a corrosion and rust resistant barrier on metal surfaces. Vapor corrosion inhibitors (vci's) have been used for years to protect metal parts in industrial and commercial applications. One small capsule protects a radius of 2 feet for one year.