Used these to make my own set of 1/2" square shank steel lathe tools. Should be able to cut various metric screw sizes (4, 5, 6). Including screws makes life easier.
Pros
This set of combination carbide inserts is a perfect match for our 6 piece wood turning set. This gives you the best choice for your woodturning work. Suitable for Aogbra lathes of 6 pieces. or other tools of the same brand. Easy to replace your jointers and planers