E523 DRIVER 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 under 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. An extremely high MOI makes this driver an extremely stable and powerful weapon off the tee. This increased MOI will improve ball speed on miss-hits and will keep shots straighter, while the back and low CG positioning creates high-flying, powerful tee shots. Tour Edge engineers have brought the Ridgeback Tech concept from Exotics to Hot Launch on the E523 Driver with a Ridgeback rail on the crown. The Ridgeback rail provides increased structural properties that help produce more power on across the entire face, including the extreme perimeters. The Ridgeback activation also is utilized as a unique alignment aid at address. The Power Channel on the sole of the club behind the face is new to the E523 Driver and provides a myriad of performance benefits. The Power Channel distributes weight to promote increased face flexing, amplified ball speed and less spin, as well as added forgiveness on shots struck lower on the face. 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. Offset designs are combined with a heel sole weight to provide the ultimate in slice fighting technology. The offset design of the E523 Driver added with a heel sole weight allows the face to square up at impact for straighter ball flight. Adjustment Tool is NOT Included