Stay Away
The manufacturer does not stand behind this product. I purchased it and within a short time the seam on the can started to leak. I discovered this when one day when I found my shelf and its contents soaked in Kroil Oil. It flowed everywhere. I contacted Kano labs by phone for a simple replacement, not even discussing how it ruined the items on my shelf. They were not very responsive and were argumentative. When we left off, they took my name and address and said they would take care of it. Well, guess, what, they never did. They don't stand behind their product. Instead of badgering the customer, me, they should have taken my can and harangued their container supplier. But, some business are just stupid that way. Stick with reputable products like Liquid Wrench Super penetrant. PB Blaster or Marvel Mystery oil.

Really great for cleaning firearm parts
A friend recommended this for cleaning black powder and regular firearms. It is the most awesome stuff for breaking free stuck parts I have ever found. I will never have to ruin a screw head or bust up another part trying to take things apart to clean them properly after one of my competitions where I fire hundreds of rounds. Anyone who has wrestled with a stuck part knows where I'm coming from, especially when that part may cost a bundle to replace.

Super Stuff
The Best Penetrating oil I have ever used. I recommended it to my parts store.