O.K. men..here is a great buy..the husband said sell..His callaway tour clubs?.These are a great set of used clubs?..Really guys. these could be considered new.He only used them for , FOUR ROUNDS OF GOLF. But that means you can get a great deal?your gain his loss.They have the nippon 990 GH shaft. The shaft is the nippon 990 .The X Series is about giving serious golfers total performance with enhanced forgiveness for the ultimate in confidence. The new X-20 Irons deliver in every way by offering technology, innovation and playability that will take your game to a new level. Using the Progressive Wall Reduction System, Callaway Golf engineers lowered the center of gravity (CG) 6 percent more than in the X-18 Irons. Progressive Wall Reduction means the CG gets progressively lower throughout the set. The CG is lowest in the long irons, helping you get the ball airborne more easily. With its traditional styling and Callaway Golf core technologies, the X-20 Irons provide the performance and forgiveness to play the game with enhanced confidence. buyer to pay shipping and insurance