As we know, Titleist released the following about the new 712 AP1 and AP2 Irons. It is the biggest effort.

The AP line of irons is the biggest effort in producing iron sets that don't require a handicap south of five. AP technology opened up a host of new possibilities in which design aesthetics and performance no longer had to be mutually exclusive propositions. That original technology paved the way for the new advances that we've made with the new Titleist 712 series.

The multi-material, dual cavity AP1, as stated before, provide not only an increase in forgiveness and stability, but also a solid feel upon impact and new and improved looks that appeals to a wide range of skill sets. The 712 AP1 Irons also have an improved feel thanks to a combination of the increase in MOI and tuned feel cavity insert.

The Titleist AP2 712 Irons take the same multi-material, dual cavity design approach but make use of a forging construction process instead of the casting process used in the AP1. By building on previous models, Titleist was able to incorporate a number of small refinements that push these irons even further in terms of what the accomplished amateur as well as the touring professional desires in a traditional blade.

The AP2 712 Irons Set base construction is similar to its predecessor but the feel properties have been tweaked to block out lower frequencies. Updates include the aluminum badge backed by soft elastomer in the cavity. A 55-gram tungsten-nickel sole weight further enhances feel and forgiveness.

And now, although so many golf companies release their new products to catch the customer's eyes. Titleist 712 series still hot sale in the world market with their good quality and advanced technology.