Damaged Screw Remover, Gentan easy out screw extractor set.Made Of H.S.S. 4341#, the Hardness Is 62-63hrc,Set of 4 Stripped Screw Removers - Gold

Great

It works, had some screw heads i couldn't get off throuhg conventional means, so I had to improvise. Use this I wasn't able to unscrew one of this, but I could use the other burnish portion to break the screw head off on a motherboard. Just make sure you have some comrpessed air so you don't fry your motherboard. Otherwise does work but only was able to actually unscrew 1 screw using the method the other 2 I had to drill them out with the burnish bit.

I am pretty impressed by these so far. I used the smallest size to take out some incredibly rusted screws in an old guitar and it got most of them without even having to flip the tool. I was pretty thrilled to see them come out after being stopped dead in the middle of a refinishing project. Time will tell if they hold up okay after repeated use but they at least work. Be sure to have the drill set to counter clockwise, like others have said.

It really doesn't work at all. I had a screw in a piece of wood and it would not budge after burnishing and then trying the remover. I ended up using a pliers to unscrew. I think it's garbage.

Does not work with broken off screw head.