The new M4 driver combines TaylorMade's revolutionary Twist Face technology with a new Hammerhead slot and a refined Geocoustic sole design to produce straight distance with a massive sweet spot. Twist-Face technology is a radical departure from traditional driver face design. The face of the M4 is curved in such a way to optimize performance on off-center hits, particularly those strikes that are high on the toe and low on the heel. The design also results in more consistent spin across the face. The M4 is also equipped with TaylorMade's new Hammerhead Slot which creates a massive sweetspot which increases ball speed and forgiveness. The M4 features geocoustic technology which utilizes advanced sole shaping techniques to deliver a solid and explosive sound with exceptional feel. The recessed sole contour also frees up volume to produce a larger clubface with a 67% larger sweet spot. Standard TaylorMade warranty applies and satisfaction is guaranteed. Headcover and wrench included.