The legendary AXIS A stretched to new levels of performance, leverage and power. Includes SONIC HAMMER and heavy-duty spring. Variable Drive Lever featured on all AXIS A series. Variable Drive Lever ? featured on all AXIS A series. The patented variable drive lever allows the player to obtain the feel of any type of pedal with one simple adjustment. The new Beater Forward design substantially increases the power of the AXIS A without making it feel heavier, resulting in an increase of both speed and punch from both heel-up and heel-down players. The Variable Drive Lever changes the ratio of the footboard movement to the arc of the beater.