Tour Edge Exotics EXS 220 Driver The Tour Edge Exotics EXS 220 Driver produces extreme M.O.I. (Moment of Inertia) numbers with its all new elongated shape and adjustable 9-gram back weight to create one of the highest M.O.I. measurements ever manufactured in a driver, making it the most forgiving and accurate driver we've ever engineered. Diamond Face design is a major breakthrough in face technology that features different thick and thin diamond shapes or "mini-trampolines" behind the face, producing a hotter face with faster ball speeds, reduced spin, and better performance on off-center hits.