The Callaway Golf MAVRIK Driver features: Adjustable loft hosel to dial in your trajectory and ball flight. Designed with a combination of incredible distance, forgiveness, consistency and feel Thinner face across a more expansive area for ultra-fast ball speeds Constructed with high-strength FS2S Titanium for optimal ball speed, forgiveness and spin performance T2C Triaxial Carbon Crown promotes better distance and accuracy Internal titanium rib system fine-tunes the head for a pure sound and feel Headcover included - wrench must be purchased separately.