AMT is  Ascending Mass Technology - making each shaft progressively heavier by 3-gram increments as golfers move to shorter irons.

AMT Black is the middle weight option in the new AMT range and delivers a mid-high trajectory and spin. AMT Black gets progressively heavier as golfers move from their long irons to short irons, allowing for increased speed and launch from the lightweight long irons and superior control and precision from the midweight scoring clubs.