Ping G30 Driver Ping Tour 65 Regular 10.5 Right Handed The ridges on the crown, called turbulators, provide more efficient air flow around the club reducing drag during the swing. The turbulators also frame the ball at address to promote consistent, confident contact off the tee. The new T9S titanium material used in the face is stronger than previous materials, allowing the face to be thinner. This allowed engineers to position the CG lower and deeper to increase MOI and forgiveness compared to prior G-series models. The stock TFC 419D shaft has a high balance point that allows the head to be 5 grams heavier than previous PING driver models, increasing momentum, MOI and energy transfer giving you more forgiveness and distance off the tee. The thin walls allow for the low, deep CG while also stabilizing sound.