Tour Edge Golf Bazooka HT Max Irons, Set of 7 (4-PW) Each iron in the set is uniquely engineered to maximize performance. The long irons (3-5) feature a longer blade length, wider sole width, and progressive undercut cavity for greater forgiveness. The mid irons (6-7) feature a mid-blade length, less offset, more bounce, and a thinner top line and mid-sole width for greater workability. The scoring irons (8-PW) feature a smaller undercut cavity, the least offset, the most bounce, and a narrower sole width for dead-on accuracy. The HT Max incorporates a progressive undercut cavity that lowers the center of gravity (CG) in the long irons for higher flying shots, and raises the CG in the scoring irons for more spin and greater control. Lifetime warranty and 30-day play guarantee