XXIO MP-700 Irons have larger club head speed
Technology - combining higher clubhead speed and increased ball speed with our biggest sweet spot for higher ball flight distance and greater directional stability. Higher ball speed technology - Heavier club head for increased kinetic energy - Sweet spot designed for each club number to match target golfers' typical strike point Ease of getting the head square at impact delivers flight distance and directional stability that overwhelms both the previous model and the competitors. The larger club head speed is achieved by increasing the weight of 2 g of the club head, thereby increasing the ball speed at impact, with the same swing speed. Srixon, Dual Speed Technology - easy-to-wielding iron with our largest sweet spot for higher clubhead and ball speed, ball flight distance and thus greater precision.