From Golf Magazine (Buyer's Guide, May 2009)
It's for: All skill levels
Dr. Alan Hocknell, VP of Innovation and Advanced Design, Callaway Golf: "The 'dual-runner sole,' originally introduced in our FT hybrids, promotes solid contact in a variety of turf conditions. We also lower the club's leading edge to make the sweet spot more accessible for you."
How it works: The omnipresent "S2H2" design takes weight from the hosel and distributes it elsewhere (such as to the sole). The low, deep center of gravity allows you to get under the ball and achieve proper lift (creating a higher ball flight than the iron it replaces). The rails are designed to limit turf interference so you get a solid strike regardless of lie.