TAYLORMADE P7MB #4-PW IRONS STEELCompact Grain Forging The 1025 carbon steel is forged using a 2,000 ton press ensuring an optimal, tighter grain structure designed to provide the most solid, consistent feel possible. Tour Inspired Shaping Designed with insights from the worlds best players, including inspiration from Dustin Johnsons Tour protos, P7MB irons have a thin topline, minimal offset and narrow sole. Machined Face and Grooves Precision is paramount. Machining the face