The Yonex EZONE GS irons is a four-piece graphite-hybrid combination of a mild carbon steel body, tungsten plate, carbon graphite insert, and maraging steel face.
This construction offers maximum ball speed and distance, with an enlarged sweet spot for greater launch from all areas of the face.
The advancement in new materials and technology create 10% greater distance from hits lower on the clubface.
The graphite acts as a damper amongst the harder metals to enhance playability and feel.