P•7MB Irons Tour-Inspired Shaping Direct input from Tour inspired the new shape of P•7MB, crafted for ultimate workability. The new design uses a shorter blade length, narrower sole width, and progressive offset design. Faceted Muscle Back Geometry A seamless blend of traditional muscle back iron performance with a contemporary look and design. The updated back bar now uses symmetrical geometry to create a timeless look both in the playing position and in the bag. Compact Grain Forging 1025 carb