Big Bertha OS Combo Irons
Extreme Distance and Forgiveness
The Big Bertha name has long been synonymous with distance and forgiveness, and the Big Bertha OS delivers new levels of both. The combination of a new head shape, OptiFit adjustability, and next-generation Face Cup technology make the Big Bertha OS Hybrid extremely easy to launch high and long. Pair that with the new clubhead construction and next-generation 360 Face Cup technology in the Big Bertha OS Irons, make the Big Bertha Combo Irons extremely forgiving.
Hybrid Features and Benefits
- Hyper Speed Face Cup promotes faster ball speeds all across the face, leading to more distance at every impact location
- Larger face provides more area to make contact with, and the added flexibility pushes COR closer to the USGA limit for more ball speed
- Designed with the assistance of aerodynamic experts, Callaway’s Speed Step Technology improves airflow to promote faster clubhead speed for more distance
- Head shape is longer heel-to-toe and deeper in the body for increased forgiveness and effortless launch
- OptiFit adjustable hosel lets you easily choose from eight loft and lie settings to dial in launch angle and shot shape
Irons Features and Benefits
- New Exo-Cage technology positions more weight in strategic locations to increase forgiveness and helps next-generation 360 Face Cup function more efficiently
- Next-generation 360 Face Cup technology elevates clubface COR closer to the USGA limit to produce even faster ball speeds and more distance
- Tungsten-Loaded Standing Wave technology in the sole lowers the center of gravity to promote higher launch for longer carry and more ball speed low on the face
- Progressive Center of Gravity technology entails moving the CG location progressively lower in each head, promoting higher launch and long carry in the long-irons and increased control in the short-irons
- Senior model is lighter in overall weight, with more loft to promote faster ball speed and higher launch angle to make it easy to get the ball in the air
Standard Steel Shaft: True Temper Speed Step 80
Standard Graphite Shaft: UST Mamiya Recoil ES 460
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