E523 FAIRWAY WOOD 17-4 stainless-steel construction with the patented Houdini Sole in conjunction with a super-shallow face, a slice-fighting offset design and heel weighting for added draw bias. Houdini Sole includes an area of mass concentrated on the trailing edge of the sole of the clubhead, as well as a curved leading edge the face. This unique and patented sole design allows engineers to precisely position weight in the head for an ultra-low and deep CG, optimizing launch conditions and greatly improving stability. Offset designs are combined with a heel sole weight to provide the ultimate in slice fighting technology. The offset design of the E523 Fairway added with a heel sole weight allows the face to square up at impact for straighter ball flight. Diamond Face Variable Face Thickness technology is a breakthrough in face technology that features 39 different thick and thin diamond shapes or “mini-trampolines” behind the face. Diamond Face VFT produces a hotter face with faster ball speeds and better performance on off-center hits, as well as reduced spin. The super-shallow Cup Face designs in the Hot Launch E metals are designed for extreme playability and high-flying launch characteristics. These shallow faces produce higher launch angles and extreme ease of launch with extreme forgiveness.