Zerust ICT510-C vapor corrosion inhibitor (VCI) flat poly bag — a 4 mil yellow polyethylene bag that protects ferrous metal parts from rust during storage and transit. Place a clean, dry part inside and close the bag; the ZERUST VCI diffuses invisible, odorless, non-toxic molecules that settle onto exposed metal surfaces. On opening, the VCI dissipates so the part can be painted, welded or processed without cleaning. Size 12 in × 18 in, 4 mil (102 µm) film, ferrous (yellow) formulation; Vapor Inhibiting Ability passes NACE TM0208. Made with at least 10% recycled plastic and recyclable. Supplied as a case of 500. Zerust part number 025-F-00008.