The structure varies depending on the club number to achieve the performance required for each. L-shape maraging steel face and inner tungsten are used for #6, #7, and #8. Tungsten alloy is mounted on the back to balance the carry performance and high trajectory. We strive for stable directivity for #9 and perimeter weighting(PW) that makes this almost impossible to mishit also by using the maraging steel face and inner weight.
The weight allows for better feel throughout your swing and through impact.