The 2017 m2 irons give golfers the complete performance package with low cg speed pocket technology face slots and geocoustic engineeringits our most technologically advanced distance iron each technology in m2 irons works together to help golfers achieve more distance peak trajectory and forgivenessoverall a more consistently performing iron swing after swingnew to m2 irons engineers incorporated face slots that help preserve ball speed on shots struck toward the heel or toe giving go