The ZX7 is a player ™s iron that looks and feels like a blade while offering more speed and total control "ZX7 delivers it all. The compact blade shape, narrow topline, single-piece forging, and narrow sole provide the workability, feel, and aesthetics of a world-class players iron. TECHNOLOGY TOUR CAVITY - Mass repositioned to ZX7's sweet spot and perimeter provide a remarkably soft feel at impact and increased workability. PROGRESSIVE GROOVES- Grooves in the 8i through PW are sharper, narrower, and deeper for more spin and stopping power on approach shots into the green. TOUR V.T. SOLE - V-Shaped soles glide smoothly through turf, even if you strike slightly behind the ball. ZX7 Irons also feature the resurgence of our popular sole notches. MULTI-PIECE CONSTRUCTION - Tungsten in the toe of ZX7's long and mid irons (3i-7i) increases MOI for more stability while the forged 1020 Carbon Steel body absorbs vibrations for an extremely soft feel.