The Callaway Big Bertha Diablo driver builds on the historic Bertha name to give you a driver that has a big sweet spot for big distance. Did we mention big? This driver has a high Moment of Inertia (MOI), allowing the club to retain ball speed on off-center strikes as well as keeping you shots on line. The Center of Gravity (COG) is positioned to produce longer, boring shot trajectories. Callaway's S2H2 hosel design adds stability and feel to this driver that is long and forgiving.

Review: "The Callaway Big Bertha Diablo driver is an incredibly fun club as it has a huge sweet spot, making it almost impossible to slice or hook, whilst gaining some serious distance down the tee!

Callaway have designed this to be a monster on the golf course! The Hyperbolic Face Technology significantly improves ball speed across the driver's face, generating more distance - even on off-center hits. Designers have redesigned the clubhead to help golfers square the clubface at impact and hit it straight! The Callaway Big Bertha Diablo has striking graphics and will appeal to golfers who want to be seen and heard!

The fiery red finish won't be to everyone's liking, but it certainly floated our boat. But it was only when we hit it that we realized how much fun this club was.
Basically, it features the massive sweetspot that we have come to expect from Callaway, but it also has something else...accuracy. The manufacturer reckons that Diablo is ideal for those of us who like to "give it a rip" off the tee, and especially when we swing more aggressively than normal.

As for the physics, the Diablo benefits from 'Hyperbolic Face Technology', a design which helps to increase the size of the sweetspot, while the so-called 'Edge Technology' means the Callaway wizards have moved weight in the head to maximize MOI. All in all, this is a long son of a gun, and you won't be missing many fairways with it."