Mizuno MP 68 Iron Set The New Mizuno MP 68 irons with 3D muscle technology are the next generation of muscleback irons. The innovative 3D muscle is the result of extensive computer optimization to deliver the ideal COG location that is lower and more face centered providing a penetrating and workable ball flight for complete shot control. The Mizuno MP 68 irons also have a Tour Confirmed sole shape that ensures the appropriate amount of turf interaction for pure ball striking. Mizunos Grain Flow Forging process ensures that the Mizuno MP 68s provide the best feel and ball control in the game of golf. Features Mizuno MP 68 Iron Set 3D Muscle design delivers a penetrating ball flight and unsurpassed ball control. Impact sound and feel are optimized through extensive use of Modal Analysis which separates Mizuno irons from the competition. Patented Grain Flow Forged 1025E Pure Select mild carbon steel provides the ultimate soft, solid, consistent feel. Durable double nickel chrome plated finish Modified U grooves, which conform to the Condition of competition 2010, produce the ideal spin rate for maximum playability in all conditions. Rolled leading edge, flattened mid sole, and rolled trailing edge deliver consistent striking ability from all types of lies. Specs Mizuno MP 68 Irons Club LH Loftnbsp deg Lienbsp deg Offsetnbsp in Bounce deg Length in 3 Yes 21 59.5 0.110 2 38.75 4 Yes 24 60.0 0.110 2 38.25 5 Yes 27 60.5 0.110 2 37.75 6 Yes 31 61.0 0.110 3 37.25 7 Yes 35 61.5 0.110 3 36.75 8 Yes 39 62.0 0.102 4 36.25 9 Yes 43 62.5 0.102 5 35.75 PW Yes 47 63.0 0.094 6 35.50