Details:

The technology of the G15 Iron
provides the high-launching, maximum forgiveness attributes that bring consistency to your iron play.. The stainless steel iron’s cavity design features a new Custom Tuning Port (CTP) which expands the perimeter weighting and increases the moment of inertia.
Weight savings from a thinner face
is re-positioned to the toe for added forgiveness on mis-hits and its wider sole produces a higher launch angle. Stronger lofts combine with a center of gravity located low and farther from the face to produce longer shots without sacrificing the higher trajectory required in a maximum forgiveness iron.