The Titleist DCI Senior OS set is designed to maximize distance for players with slower swing speeds. Using the precise Center of Gravity placement seen in the other DCI irons, the clubs in this set couples optimal CG placement with loft and lie combinations that make getting the ball airborne easier. The oversize head adds forgiveness and less unwanted side spin from off-center shots. Buy the Titleist DCI Senior OS irons from 2nd Swing and get a great deal when you trade in your old clubs!