The E525 series is designed for players seeking more traditional shapes that optimize launch and spin, offering forgiveness, ease of use, and accuracy. The 460cc Titanium E525 Driver is incredibly stable at impact thanks to its extreme MOI properties. MOI Boosting Rear Sole Weight Weight strategically placed to the extreme rear of the clubhead places more mass at the extreme trailing edge of the clubhead. The back weight creates an extremely high MOI rating that surpasses 5,000 g-cm2 for top in-line stability. Ridgeback Technology A ridgeback rail on the crown, originally an Exotics-only tech, is featured on every 525 metal. The ridgeback rail provides increased structural properties that help produce more power across the entire face, including the extreme perimeters. The ridgeback activation is also utilized as a unique alignment aid at address. Diamond Face VFT Diamond Face VFT technology is a breakthrough in face technology that features 37 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. 360deg Cup Face Design The premium 6-4 Titanium head features a deep 360deg Cup Face design. Cup Face construction increases the amount of face flexing on off-center hits to achieve higher ball speeds and creates a more solid feel. Center Sole Rail Design A sole rail design on all E525 metals extends from leading edge to trailing edge. The new sole rail design produces a super-low CG for high-launching shots with optimized spin rates and maximum ball speed off the face, making it easier to achieve greater power and increased forgiveness.