The xr pro driver gives you low spin and outrageous speed in a players shape led by high speed more efficient energy transfer forgiveness and more speed from an enhanced aero shapehigher ball speed speed from rbullmoto face technologythis is the power of rbullmoto technology ndash it removes weight in the face to increase ball speed and create more efficient energy transfer across the face thatrsquos why you get more ball speed at every impact location even on mishits and itrsquo