mim technology-the mim process is an evolution in manufacturing that is used to create the most precise and intricate shapes, the result is our purest, and softest feeling players iron that performs and looks unlike any other tungsten weighting-a tungsten toe weight centers the cg behind the hitting zone to give yo the purest, most precise shots with added stability to keep the ball on target tpu insert-a thermoplastic polyurethane (tpu) insert positioned behind the hitting zone dampens the vibrations for a buttery soft feel at impact Included components: 4 Iron, 5 Iron, 6 Iron, 7 Iron, 8 Iron, 9 Iron, Pitching Wedge