XXIO 12 Men's Single Irons & WedgesXXIO Men's 12 Single Irons From grip to tip, the inexplicably ultralightweight XXIO 12 Irons are designed with one thing in mindutilizing ultramodern flex technologies and exotic materials to promote significant ball speed improvement without the need to increase swing tempo. Ultimately, it means you can hit longer and more accurate Iron shots without having to change your mechanics. Experience the Difference.