Engineered to help you hit better shots more often with the all-new Cap Back� design. SIM2 Max has an intelligently optimized sweet spot designed to provide golfers with better performance where they need it the most. A revolutionary new Cap Back Design unlocks the next level of game improvement irons. Eclipsing the performance of traditional cavity backs, the multi-material construction promotes better forgiveness, distance and feel. Stock Shaft: Ventus Blue. Stock Grip: Lamkin Crossline 360.