The prototype insert that Phil Mickelson has been using in his putter the last few months is now available to the masses. This technology is the main feature of the newest line of putters from Odyssey – a division of Callaway Golf. Callaway & Odyssey have recently started spending a majority of their annual budgets on research and development. Their newest innovation comes in the form of the “microhinge” insert that has been engineered to produce a forward roll more quickly off the putter face. Check out the video below for more info on this intriguing technology.