Screw in tips/blunts?

My daughters are showing an interest in 3D/field archery so I was thinking of making them a set of cheap (but decent carbon/alloy shaft) blunts to practice.

Bit of a newb question - I have seen screw in blunts but dont know anything about this whole screw in thing - is there 1 universal thread so I can swap blunts in and out at will, or is it more complicated than that?