The have a small hole that is for hexagonal screw driver like this ones
The hole on the axle is extremely small, were can i get a hex set with one that fits yyj axles
Well I’ve never heard about that (But I’m a brand new player so I wouldn’t know anyway)
But my friend that makes a lot of models and such has some crazy tiny ones that he picked up at his local hobby shop… That’s the only place I can think of that would have some.