iFixit Precision Screw Extractor Set

Works like a charm

Got this to remove a very hard to remove screw from an old canon camera, took a few turns to find the right fit but it removed it flawlessly. Only caveat is that this is pricey given its not sold in aus and imported but quality is good regardless.

Screw extractor set

Fast delivery, good quality, as described . Works well on smaller screws