Yonex ezone elite mens hybridthe new yonex ezone elite mens hybrid builds on the success of previous ezone series to provide truly high quality and performanceoctaforce technology in the club face as well as crown provides a lower and deeper center of gravity as well as more ball speed oh and they look great too head construction sus630 stainless steel precision castingshaft construction m60 light m60 light shaftweight reduced by 3g means