Taylor Made's new innovative technologies in the R500 series include: the Inverted Cone, Tuned Weight Cartridge and Motion Analysis Shaft System (M.A.S.2). The R500 Series represents the synthesis of three innovations-Inverted Cone Technology (ICT), Turned Weight Cartridge (TWC), and the Motion Analysis Shaft System (MAS2) that equal the longest, most forgiving, best feeling drivers you?ll ever crush a tee shot with. Plus, the R500 Series boasts the new maximum allowable COR(.860) porposed by the USGA/RBA. The result is the fastest-faced, highest performing driver ever created. The cold-rolled titanium clubface that?s ultra thin yet extremely strong, generates a more efficient energy transfer at impact, resulting in a COR beyond the .830 standard me by the 300 Series. For every .010 increase in COR, the average golfer receives two additional yards. The COR is one of several factors that include launch angle, spin rate, and ball speed that combine to maximize a driver?s distance. Taylor Made has engineered the R500 Series to optimize these factors.