Check them out - it's a cool little contraption that protects the plug on your trailer and the pins on your truck from rust etc. Made in Canada, fits together nicely for storage, and they're red.
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Dirk
17' Plan A, '05 Nissan Frontier, canoe, dog.
Half-fulltimer
That is cool. We had that very problem with our Casita - after sitting in 85% humidity for a couple of months there would always be some corrosion. And, of course, we'd discover it on the morning of our next camping trip!
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Cheryl and Bruce
Eureka, California