The Callaway Big Bertha B21 generation doesn't include the OS variant.
Iron Set
Used Callaway Big Bertha B21 OS Iron Set
2021
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.
Model info
The Callaway Big Bertha B21 generation also comes in one other iron set variant, the Standard.
Price guide
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Specs
Key facts for this model - individual clubs may vary.
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Release timeline
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