Titleist debuted their first AP iron 11 years ago. Today, the lineup is finally being replaced. Dubbed the T-Series, Titleist's latest family of irons includes the T100, a forged cavity iron designed with help from Jordan Spieth that replaces the AP2, the T200, a "players distance" club that replaces the AP3, and the T300, an improvement club that replaces the AP1. The latter two also feature Max Impact technology, which combines thin clubfaces with polymer cores. Developed with a hand from the company's golf ball R&D department, it creates higher ball speeds without sacrificing sound or feel.