Hot Launch E523 The Extreme Game Improvement Hot Launch E523 Fairway Metal is designed to produce higher-flying shots with extreme accuracy that will transform your fairways into scoring clubs. This 17-4 stainless-steel fairway features the patented Houdini Sole in conjunction with a super-shallow face, a slice-fighting offset design and heel weighting for added draw bias. E523 Features: Houdini Sole Technology - The 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 design allows engineers to precisely position weight in the head for an ultra-low and deep CG, optimizing launch conditions and greatly improving stability. Heel Weighted Slice-Fighting Offset Design - 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 VFT - 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. Super Shallow Face Design - The super-shallow Cup Face designs in the Hot Launch E metals are designed for extreme playability and high-flying