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Tossed a strip of this in my tool chest drawer and six months later the chisels still wipe clean with no rust spots. It cuts easily with scissors, so I lined a few ammo cans too.

I was skeptical a foam sheet could actually stop rust, but after lining my shed shelf with it, my hand tools have stayed spotless through a humid summer. The material is dense enough to lay flat and cut cleanly with scissors. It's become a staple reorder for me.

Cut a piece to fit inside my toolbox drawer and it's already saved a set of chisels from a few damp days in the garage. The sheet is dense enough to stay put but easy to trim with scissors, which made the job quick.