The Cleveland Launcher Driving Irons (LDI) are iron-style hybrids designed to replace those hard-to-hit long irons. What makes these irons so effective and easy to hit is the unique design of the club head's interior. The specially engineered internal weighting system lowers and deepens the center of gravity and increases the Moment of Inertia (MOI) beyond that of standard irons. These improved properties produce a penetrating ball flight with added stability for distance and consistency. The end result is a club that is ultra easy to hit and an excellent choice for tight tee shots and long approach shots. The Cleveland LDI is such a consistently effective club, that when the first prototypes were introduced at the long, tight and unforgiving 2004 PGA Championships, six Tour professionals put them into play immediately.