Zerust/Excor ICT Tube Strip Pro is a flexible solid-core plastic vapor corrosion inhibitor (VCI) product for protecting the inside of bolt holes, hollow chassis frames, confined electronic spaces, tubes, pipes and barrels. Trim the strip to the desired length, insert it into the tube or pipe and cap the ends tightly; it diffuses invisible, odorless, non-toxic VCI molecules that settle onto the interior metal surface and dissipate on opening, allowing the part to be put to use or processed immediately. Protects ferrous metal pipes, tubes and barrels up to 4 in (10 cm) diameter for up to 2 years during storage and shipping, and is yellow-metal compatible. The solid-core construction distinguishes it from the hollow ICT Tube Strip. Zerust part number 475-M-00005.