The world's best players provided extensive feedback to help Callaway make this a true muscleback iron. This is a classic shape and style, with a traditional, slightly thinner topline, and a beautiful bright chrome finish in Callaway's smallest blade head shape. Engineers have moved the center of gravity position to optimize ball speed and forgiveness. Precision grooves are built in to promote the high level of control and consistent spin that muscleback players expect out of any playing conditions. The 20V grooves also stand out for reducing fliers from the rough to deliver even more control. Shafts are True Temper Dynamic Gold Tour Issue and the grips are UTx by Lamkin. Please contact us if you are interested in customizing your set. Lofts, lies, shafts, lengths, grips, set makeup, and more. This gorgeous forged Callaway set can be built any way you like it. Authenticity is guaranteed - we are an authorized Callaway retailer. Standard Callaway warranty applies.