Zerust Cor Tab CT-50 compressed drop-in vapor corrosion inhibitor (VCI) tablets for protecting ferrous and non-ferrous metals inside sealed enclosures, tool chests, instruments and small parts. Drop or sprinkle the tablets in the enclosure and seal it; each tablet diffuses invisible, odorless, non-toxic VCI molecules that settle onto exposed metal and dissipate on opening, so parts can be used or processed without cleaning. Protects multimetal assemblies for up to 6 months in a sealed enclosure. Vapor-inhibiting ability passes NACE TM0208. 0.50 g tablet, 3/8 in diameter; coverage up to 0.5 ft³ (0.015 m³). Supplied 300 tablets per bottle, 8 bottles per case. Zerust part number 450-M-00002.