Warrior 21 Degree Hybrid Golf Club - Left-Handed Extraordinary Mass-Transfer Technology providing dynamic head speed and remarkable distance Part iron, part wood, combines fairway wood distance with the control and accuracy of an iron Progressive Face Thickness Technology (PFT) provides maximum Co-efficiency of Restitution (COR) for legal distance according to USGA rules Comes equipped with a frequency matched and balanced Warrior 3.1 Tour Series graphite shaft