Mizuno ST-X Driver (Right-Handed)Mizuno ST X Driver It's ShowTime with the new ST series from Mizuno. Each model features the 2nd generation of the brand's SAT2041 Beta Ti face, which is 17% stronger and 8% more flexible than commercial 6 4 titanium. This super alloy construction delivers incredible ball speeds while the complex carbon crown promotes exceptional sound and feel at impact. The ST X model is a draw bias clubhead promoting a straighter flight for the player that