Evapo Rust

Hello all, my apologies if this has been posted before, but I've recently discovered this solution called "Evapo Rust" for small rusty parts. Here is the e-brake mechanism from my 300:



Here is the same part after soaking for 24 hours:



Before soaking, the spring action didn't work, now it's smooth as silk. It's a little pricey, $23 a gallon, but is saved me a bunch of hours trying to clean rusty parts. Now if I could only fill a swimming pool with the stuff and soak the whole car...
Author: Samplingman