Mizuno ST-Z Technology: Cortech Chamber Detail: (±4) ( 9.5 & 10.5 ) Shaft: Ventus Black Grip: Iomic Sticky Black Description Description The Mizuno ST-Z 230 Driver. Straight, Stable and Low Spinning. A straight bias driver with great stability on off centre hits. Similar in look and character to the previous ST-Z. Boosted by the CORTECH Chamber to be faster from the face, spin less and deliver an incredible, solid sensation at impact.
