Great Big Bertha II
Great Big Bertha II is a line of golf clubs Callaway Golf introduced in 2004. It includes drivers and fairway woods and is a continuation of the Big Bertha series that was started in 1991. The Big Bertha line was named after a German cannon during World War I that was known for its accuracy and distance.
The Great Big Bertha II 415 driver is named after the volume of the clubhead, 415cc. It was the largest clubhead that Callaway Golf had ever produced. allowing the weight to be distributed to the edges to keep the shots straight and long. The clubhead was made of titanium and the clubface was manufactured using new methods that made it thinner, stronger and more forgiving on mis-hits. The hosel has been bored all the way through to reduce twisting and improve the weight distribution.
The Great Big Bertha II 415 driver comes in three different angles of loft: 9, 10 and 11 degrees. The 9- and 11-degree models have a square face angle. The face on the 11-degree model is closed 1 degree. All three have a 55-degree angle of lie and a swing weight rated at D2.
The standard shaft on the Great Big Bertha II Driver is a GBB System 60, which is graphite. The shaft is 45 inches long for men and 44 inches long for women.
Great Big Bertha II Drivers shafts come in four different flex ratings: light, regular, firm and strong. The light flex shaft weighs 60 grams, has a middle torque rating and a low kickpoint. The regular flex shaft weighs 61 grams, has a middle torque rating and a middle kickpoint. The firm flex shaft weights 63 grams, has a low torque rating and a middle kickpoint. The strong flex shaft weighs 71 grams, has a low torque rating and a high kickpoint.