Ping ISI K irons

Question
What does the black dot on the back of the irons mean?  Would you recommend them?

Answer
The black dot is one of Ping's color-coded clubfitting ratings. It means that these clubs are "standard" models - i.e., they have the standard-length shafts, standard offset, standard lies. If you are particularly tall or short, or have a swing in which you approach the ball from a particularly steep or flat angle, you probably would be better off with clubs fit to your body type and swing type. Otherwise, standard clubs are probably just fine. But a clubfitting is always a good idea. Here's a good explanation of why -- http://golf.about.com/cs/tipslessons/a/aa041003a.htm