Spank subrosa 747 evo barswe spent the time to develop our xgt technology xgt stands for extreme gradual taper that means that the stick is seriously tapered to the ends in the center where the stem clamps we use a larger wall thickness but at the end it drastically reduces to minimal wall thickness requirementsthis allows the energy to dissipate over a consistent and gradual tapering within the inner core whats the result much more strength but also much better dampening of hard hi