When Easton bought Beman they discontinued the MFX Classic and Black Max and came out with the Beman Centershot after the new Axis Traditional.The Centershot is in their new H-size line of arrows,larger diameter then an Axis.Axis and old MFX use a HIT insert with a .204 ID,the H-size is around .230-232 ID and use a regular type insert with a lip on it.They do make Axis inserts with a lip on them like a regular insert called Axis Deep Six inserts.They are stainless steel but you need to use Deep Six points with a 6/40 thread.The heaviest point available for them is 125 gr..Easton has come out with a lot of their new arrows in their H-size line like ST Epic,Bloodline,Wildthing and many others.