The srixon z 565 irons have made srixons best iron performance even better the z 565 is a highly playable forged cavity back that promotes maximum distance and forgivenessthe srixon z 565 irons have made srixons best iron performance even better the z 565 is a highly playable forged cavity back that promotes maximum distance and forgivenesssmoother turf performancethe new tour vt sole has been modified to move even more efficiently through the turf reducing impact resistance and tighten