Tour Edge Golf- Hot Launch Combo Irons (8 Club Set) The vast Undercut cavity design allows weight to be moved away from the Face and into the sole of the club Higher moment of inertia, a higher launch angle, and enhanced forgiveness Features a thinner top line for a more traditional look and more generous Offset progressive in design Club head is constructed from 450 ss hyper steel and a forged Face featuring variable Face thickness (vft) technology This construction design delivers the ultimate in forgiveness and power