The Callaway Biggest Big Bertha generation doesn't include the OS variant.
Variant
Used Callaway Biggest Big Bertha OS
1997
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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Overview
The Callaway Biggest Big Bertha generation also comes in one other variant, the Standard.
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