The Callaway Big Bertha Diablo is an all-titanium driver designed to help square the face at impact, particularly when swinging hard. Available in neutral and heel-biased draw versions, the head is uniquely shaped to provide the optimal launch and high MOI.
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The way the eye-catching Diablo sits at address suggests it has been designed for maximum forgiveness, and our testing undoubtedly backed this up. For those who struggle with a slice, even the neutral version encouraged an in-to-out swing path and the draw version should definitely help straighten things up.