Looking for a threaded insert tool

I'm looking for that tool that installs threaded inserts into metal.Put the insert in and you can now you can screw in a bolt.I've found big riveters that use a threaded insert to act as a rivet but I need the tool that installs the insert,SAE std preferred...Any help would be greatly appreciated...

I have used one quite few times , u can make one very easily just a piece of metal w/ a correct size hole in it for the bolt to squeeze/pull it down , use oil-or greese ---------