The Callaway Big Bertha OS 2017 generation doesn't include any single irons.
Single Iron
Used Callaway Big Bertha OS 2017 OS Single Iron
2017
The OS (Oversized) variant boasts a larger clubhead profile, pushing weight to the perimeter for unparalleled forgiveness. This design minimizes twisting on mishits, ensuring maximum stability and straighter shots, perfect for golfers needing ultimate accuracy and confidence.
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