The Inza's extreme MOI shape gives exceptional forgiveness and stability equating to straighter puts on mis-hits. Finally with Taylormade's Moveable Weight Technology (MWT), you can change head weight by installing differnt MWT cartridges in two rear ports which allows you to control the Inza's feel. Taylormade's new AGSI + technology with 14 grooves positioned closer together is more efficient at promoting forward spin and negating backsping which makes for a smoother roll.