Introduced in 2009 as part of the SZ irons, these wedges were design for a low and wide sweet zone ("SZ"). Their low-profile head design and shortened hosel result in low-and-back CG, while MOI is maximized through a wide sole and heel-toe weighting system. The full-cavity back and urethane back cavity insert provide softer feel and forgiveness on off-center impacts. Stock shafts were N.S. Pro 1030H in steel, and an Aldila DVS-HL in graphite.