NIKE Machspeed 3 Hybrid Speed = Distance: Comprehensive aerodynamic engineering moves air faster across the sole, over the crown and around the skirt for incremental swing speed advances Square Stability = Forgiveness: By moving weight out and into the corners, Tour proven square technology delivers more stability in all kinds of lies 455 Ultra Thin Face: Thinner face combined with Split Compression Channel delivers hotter response and longer shots Ultra Light Wide Body 70 gram graphite shaft design Designed to optimize aerodynamics throughout the swing and deliver more clubhead speed