Anyone know the size of the tiny set screw in knobs (Chinese)

[peAk]

I need to get some small micro allen wrenches for these set screws in some of these Chinese knobs I have been getting but I want to make sure I get the right size.

Anyone know what the typical size is?

[Betty Wont]

mm....metric...?

[wgc]

usually somewhere between 1.5 and 2.5 mm.  I'd probably get a set, always good for guitar fixin', bathroom faucets, etc.