The Idea Tech V4 Irons use a multi-material construction featuring tungsten heel/toe perimeter weighting in the long irons and provides optimal CG location for increased forgiveness and higher launch. Because the Tech V4 is offered in two distinct sets, a forged iron set and an all-hybrid set, Idea Tech V4 covers a wide range of golfers anywhere from the single-digit handicap golfer to the higher handicapper who wants to launch the ball higher and gain extra distance.