Callaway Quantum Max Fast IronsQuantum Max Fast Irons Quantum Max Fast is a lightweight, easy to launch iron that helps you get more height, speed, and distance. This model is designed to be fast and forgiving, while also promoting a high launch for moderate swing speed golfers. Modern 360 Undercut The Modern 360 Undercut Cavity is designed to deliver faster ball speeds, higher launch, and more forgiveness across the face, thanks to its advanced two piece design with extreme