Callaway XR Steelhead Graphite Irons 4-SW

Callaway Steelhead XR Graphite IronsThe newest addition to the Callaway XR family, Steelhead XR Irons, combine the beautiful shaping andplayability that made the Steelhead X-14 one of the most successful irons of all time.  We paidspecial attention to some of the design aspects on the original Steelhead Iron, including a slightlylonger blade length, a slightly more rounded toe and the signature hosel-to-face transition.  The speed and distance of Steelhead XR Irons is based on our next-generation 360 Face Cup™technology, which allows the edges of the ultra-thin face to freely flex and release at impact withgreater efficiency, adding ball speed that promotes more distance, especially on off-centre hits.The boost in face-speed is so significant that it’s hiked the COR up to almost .830 -- the USGAlimit. More speed and distance on mis-hits is made possible by the modern Hollow Bore-Thru hoseldesign, which allowed Callaway engineers to remove weight from the hosel and reposition it instrategic areas within the head to: 1) Increase MOI for more forgiveness on mis-hits. 2) Preciselyposition the CG strategically in the long, middle and short irons. Great feel and sound come from our new steel-infused polyurethane layer positioned low in thehead, behind the lower portion of the face. In addition to absorbing unwanted impact vibration topromote a remarkably satisfying sound and feel at impact, it also helps lower the CG to promotefaster ball speed and higher launch characteristics for more distance. Put it all together and you have an iron that delivers the finest combination of speed, forgiveness,distance and control to ever emerge from the Callaway R&D department. Distance Features More Speed and Distance from Next-Generation 360 Face Cup TechnologyNext-generation 360 Face Cup™ technology increases ball speed with greater efficiency on bothcentre hits and mis-hits for more distance on every swing. Higher Launch and Better Feel from Steel-Infused Polyurethane LayerA bar of steel-infused soft urethane layer positioned behind the lower portion of the face servestwo functions. 1) Absorbs unwanted vibration for great feel. 2) The integration of steel into theurethane adds weight, which lowers the head’s Centre of Gravity for faster ball speed on low hitsand higher launch characteristics.Control Features More Forgiveness from Hollow Bore-Thru Hosel DesignHollow Bore-Thru hosel design saves significant weight that’s repositioned in strategic places inthe head to create more forgiveness and easier launch. More Control and Distance from Progressive Centre of Gravity PositioningThe CG is positioned strategically in each iron to help golfers get the most out of their game. - Exceptionally low and far back CG to promote easy launch and long carry in the long irons- Low and back CG to promote easy launch and keen control in the mid irons- Low and middle CG to deliver lower, high spinning shots in the short irons to attack pins