Nutserts

[davepl]

Not really a good for for this, but I'm wondering if someone can tell me the difference between rivet nuts and nutserts.

It doesn't appear to be just a brand thing, from what I can find.

I saw them used on tv and the install tool was huge like a bolt cutter. But the ones on amazon are more like hand rivet tools.

I'd like to get something that will set nuts where I have no access to the backside. But what kind and what tool? I'd like metal, not poly, if it's stronger.

Thanks,
Dave