Following on from the successful XR-03 Driver, TaylorMade Golf has introduced its 'big brother' - the impressive XR-05. It is the longest, largest and lightest driver TaylorMade has ever developed. The 440cc head has an expanded COR Zone to give it a very high COR clubface for high ball velocity. Like the R500 series it comes with a Tunable Weight Cartridge that uses three rods of selected densities, encased in urethane housing, creating cartridges covering a 12g weight span. The TWC "tunes" each head to the specific weight and allows for a shaft adjustment (length, swing weight) to match the different shafts without compromising other performance parameters such as head centre of gravity, COR and sound. Each club comes with a Superlite 50g graphite shaft, engineered especially for use with large-headed metalwoods