The Ping S557 irons feature a tour-inspired design that blends feel, forgiveness, and consistency. It features a smaller, stainless steel head that plays like a player''s iron, but with an increased MOI for more forgiveness. Its dense tungsten toe weight and longer hosel also contribute to a higher MOI. The S57 also features dual stabilizing bars in the cavity and optimized CG locations help produce distance control while the better player-preferred offsets produce penetrating ball flight. Its narrow cambered sole improves playability from most any lie, while the thin topline provides the aesthetics that better players prefer.