#NotNathan...
Black oxide coated stainless-steel hex was the first standard offering, but folks sometimes complained about it wearing off.
Then as an option two kinds of "T-15" Ti-Torx, a plain satin (small up-charge) and the fancy turned/shiny Ti-Torx (bigger up-charge).
I believe the earlier DEK1 runs also came as standard with a satin Ti-hex.
Later CPK introduced as an option the more recent machined (shiny) "T-20" Ti-Torx (up-charge) that can also be heat colored (for an additional up-charge).
Sometime maybe around early BFK/SDFK release? Nathan went from the older black oxide to the now current standard stainless-steel hex.
He also changed from the earlier aluminum tube/pins to the current stainless-steel tube/pins.
I believe that Jo still has a remaining supply of black oxide hex and the satin Ti-hex, (by request) but I think that all of the "T-15" Ti-Torx are now gone.
Top to bottom:
-Satin Ti-hex
-Black oxide hex
-Shiny/turned T-15 Ti-Torx
-Satin T-15 Ti-Torx