Innovative composites made really good shafts, i had a few wood shafts , dont recall having used any iron shafts. iirc their shafts were all filament wound.
in the absence of any specs i suggest you try the following
1. Mesure the frequency on each iron shaft.....that will tell you if they have been pre tip trimmed for a specific iron head or not.
- Measure the length of parallel tip section on each iron shaft to see if its the same or different.
With this information you have a good starting point. Once that is established and if they turn out to be are all .370 blanks yoh will have to experiment with tip trim to see how trim much does what.
If they are pre tipped and differing frequencies, then life is much easier for you.
If they are all the same uncut length ( what length are they ?? ) and .370 shafts I suspect They are blanks and you would tip trim them .
The thing that is a bit of an issue is they are pre prepped on the tip, which typically suggests that they are already tipped for a specific iron head. However, if they are long and in fact 1 iron shafts you should still be able to tip them for other irons, will depend on the amount of parallel tip section they have, hopefully several inches