Jailbreak technology – two rods supporting the head from crown to sole.It’s an aesthetically pleasing club, featuring a black pear shaped head and gold trim and features.It was designed with the goal of helping golfers with slower swing speeds gain distance, forgiveness and accuracy. The Epic Star delivers Callaway’s lightest driver ever. With the latest addition to the series – the Callaway GBB Epic Star Driver – the manufacturer has cast an even wider net. Callaway‘s jailbreak technology has appealed to and satisfied golfers of all ages and skill levels. And they have been a sizzling seller throughout the market in 2017. The Callaway GBB Epic series of drivers were unveiled in the United States in January.