The new [K]Three FX is a game improvement, forgiving frame featuring Wilson's FX technology that includes the Quad Shaft, an innovative shaft design that distributes weight to four pillars instead of two. This provides improved control and exceptional torsional stability on off-center hits. [K]Factor Technology and the Triad System drastically reduce vibration so you can play all day. The open string pattern and head-heavy balance provide good pop and excellent power. The [K]ompact Center design greatly improves handling, maneuverability, and provides a uniquely soft feel. This is a high power frame and is best suited for players with short, compact strokes. Recommended for 2.0-3.5 level players.