Crafted with unparalleled ultra-precision soft iron forging A tour cavity back evolved through center of gravity designed for each club number A tour cavity back with high-precision soft iron forging crafted with minimal manual processes using an ultra-precise forging process and CNC undercutting. While succeeding the functionality of the previous C03 model which was already close to perfection as a soft iron integrated cavity back iron, center of gravity design was developed for each club number through using 3D CAD. The C03TC was crafted to become a world-standard soft iron forged iron with enhanced balance as a set, pursuing functionality for each club number in response to feedback received at U.S. tours.