Callaway gbb epic driver
Epicrsquos power is based on our innovative new jailbreak technology which fundamentally changes the way the head and clubface behave at impact to deliver more ball speed and distance the key structural components of a metalwood ndash crown sole and face ndash each bend flex and rebound at impact because theyrsquore connected they influence each otherrsquos dynamics jailbreak technology creates a remarkably efficient relationship between these components to promote more ball spe