ONE LENGTH™ SET MAKEUP: The Cobra F8 ONE Length irons are engineered to match 7-iron weighting and length to deliver more consistent trajectory and distance throughout the set.FORGED VFT PWRSHELL FACE™ TECHNOLOGY: A thinner, variable thickness face enhances the active Sweet Zone™ for faster ball speeds and higher launch across the face.CARBON FEEL TECHNOLOGY: A lightweight carbon fiber medallion supports a thinner face while delivering improved sound and feel.LOWER PROFILE DESIGN: A lower profile clubhead design lowers CG for higher launch and more clubhead speed.TECFLO™ PROGRESSIVE SET TECHNOLOGY: Advanced construction technologies create the ultimate progressive irons tailored to performance throughout the set.PROGRESSIVE SPIN TECHNOLOGY: V-Grooves on the 4-6 irons reduce spin, U-Grooves on the 7-PW optimize spin, and wedge-spaced grooves on the GW-SW deliver extra spin where it's needed.