Overview * TaylorMade's new M4 irons create a new generation of straight distance, consistency, and accuracy. * Their new RIBCOR design transfers more energy to the golf ball by stiffening the perimeter of the club and focusing flexibility where you make contact. * Heel and toe weighting are optimized to increase MOI and forgiveness by adding weight to perimeter of the club head. * M4 irons are ideal for golfers who not only want to hit the ball longer and straighter but do it more consistently. Features * New RIBCOR design stiffens the perimeter of club head, focusing face flexibility in the hitting area for distance and forgiveness with greater energy transfer to the golf ball * Optimized heel and toe weighting increase MOI for even more forgiveness * Speed Pocket structure and ultra-thin leading edge work together to increase speed on shots hit low on the face * Fluted hosel and 360A undercut cavity saves weight, redistributing it low in the head to increased launch distance and consistency RIBCORNew RIBCOR design localizes club face flexibility in the hitting area to transfer more energy to the ball for more distance and forgiveness. It also stiffens the perimeter of the club head for a more rigid club, enhancing sound and feel. RIBCOR creates a tighter dispersion by limiting the flexibility of the toe area.More Forgiving WeightingWeighting is optimized in the heel and toe of the club head to significantly increase MOI over the 2017 M2 irons.Speed Pocket + Face SlotsThe Speed Pocket and ultra-thin leading edge work together to increase speed on shots it low on the club face. Face slots are also included to protect ball speed.More DistanceA fluted hosel and 360A undercut cavity distributes mass low in the club head for greater launch, distance, and consistency.Unique Shaft OptionsMultiple shaft choices provide you with the personalized performance you need to make these irons work for your game.