SM7 Features: Each wedge engineered for precision shots, distance and control Increased shot versatility with expanded fitting options Improved distance and trajectory control with Progressive Center of Gravity locations 100% inspected Spin Milled grooves deliver up to 100rpm more spin on average Parallel Face Texture for tighter quality tolerances and maximum spin Proprietary heat treatment for longer lasting spin through the life of the wedge D grind offers high measured bounce with the cresce