ELEVEN IRONS: Hot forged titanium faceplate, integrated tungsten sole weight and intricate composite construction for a forgiving and easy-to-use design that delivers performance for moderate swing speeds Two slots cut behind titanium face creates a Double Undercut cavity that increases ball speed on low strikes Weight Plus Counterbalancing Technology: Brass and rubber weight in the end of the shaft, positioned behind your hands as you grip the club Helps push the clubhead through backswing for a more consistent swing position At beginning of downswing, the weight brings your hands into position, keeping your arms closer to your body for a squarer face at impact Power, precision and incredible lightness Super game-improvement iron: Largest, most forgiving iron type SHAFT: XXIO MP 1100 Graphite Shaft GRIP: XXIO 11 Weight Plus Grip