Custom 455 is a common material used in driver construction.

    toraider
    Actually, I've seen it used for face material in fairways and hybrids, recently in the Malty TC line.

    Assuming it's 455cc vs. maraging steel....not sure that would even make sense ina driver offering, but ??

    toraider Volume.

    The average size of the heads was 455cc

    Before the firestorm, when I say "average" it's because lower lofted heads are larger and higher lofted heads are smaller

    Anyone that has ever had a hatchback car will understand.