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The new Mizuno ST-Z 220 driver is designed for a low spinning straight ball flight pattern. The modern players profile features a full 460cc head that sits closer to the ground for higher launch. A Z-Axis construction evenly distributes weight across the toe and heel to produce a low spinning straight ball flight. A highly resistant Forged SAT2041 Beta Ti face is built with multi-thickness CORTECH technology to elevate ball speeds.