The Callaway Big Bertha series doesn't include any driving irons.

Driving Iron Generation

Used Callaway Big Bertha 2006 Driving Irons

2006

The Big Bertha 2006 driver incorporated Hyper X technology, optimizing the face design for increased ball speed across a larger area. Its deep CG and high MOI delivered maximum forgiveness and a penetrating ball flight, suitable for a broad range of players.