"The semi high-back shape has been achieved irrespective of the deep face driver. It is designed to ensure excellent stability for a little shorter center of gravity distance and is a little shorter with the middle center of gravity. The high density cup face, featuring pleasant hitting sound and response, allows the user to feel the ball caught on the face. The 450 club face was designed for maneuverability, whereas the 455 is straight-line stability.
Able to obtain a stable trajectory and comfortable hitting feel with an appropriate spin. The special high-density method is a multiple process. A two press process is added after hot-forming the face. It adds greater density to the metal texture of 6-4 titanium, thereby enhancing the rigidity of the material."