Pre-loved Cobra Speed Zone Irons (One Length) Graphite - Lite Flex Air Speed 45g shafts (PW - 6i) Carbon Topline-The Light Zone-Carbon fiber inserts are 40% lighter than steel, saving 3 grams to move the CG lower and increases ball speed. Speed back Shaping-The Stability Zone-Extreme heel and toe weighting creates a lower CG and higher MOI than most traditional iron shapes. PowerShell Technology-The Power Zone-A PWRSHELL face insert is forged with a larger think pocket from heel to toe, and deeper undercut to enhance ball speed and launch across the face. Co-Mold Medallion-The Feel Zone-A Co-Mold medallion dampens vibration for exceptional sound and feel, even on off-center hits.