Features:

- Model 770CFE irons represent the first set of irons designed with a ultra-thin, forged steel, CNC machined, variable thickness face design.

- The 770CFE irons are designed with a variable thickness forged face to offer golfers a higher ball-speed-to-swing speed ratio than is possible with a conventional thick face iron design, but also to offer golfers a much better off-center hit forgiveness because of the variable thickness face design.

- Because irons increase in loft progressively through the set, the actual force of deflection of the face will decrease as loft increases. To help maximize the amount of face deflection as loft increases in the irons, the forged variable thickness face design changes in steel alloy composition and thickness. The #3 and 4 iron faces are forged from Carpenter 455 high strength steel, designed with a variable thickness of 2.4mm/1.9mm. The #5, 6, and 7 iron faces are forged from 17-7 stainless steel and machined to a variable thickness of 2.5mm/2.0mm. The #8 through wedge faces are forged from soft 304 stainless and machined to a variable thickness of 2.6mm/2.2mm.

- In addition, as loft increases in a set of irons, the actual position of impact on the face will change. To accommodate this natural tendency in iron impact position, the thicker center section of the faces changes in position on each 770CFE iron through the set.

- The 770CFE irons are individually computer modeled for face thickness dimension, face thickness position, and face material for each iron in the set to offer the best individual performance possible in a full set of irons.

- All 770CFE faces are CNC machined after forging to ensure precision in the face design. The CNC machining marks can be seen on the back of each face.

- The body of each 770CFE iron is designed to maximize the area of the face available for face deflection, as well as to move as much of the weight of each head further back from the face and shaft centerline to assist in launch angle.

- The sole design of the 770CFE is designed to keep a large amount of mass low, but by beveling the back edge of the sole the sole width is not so wide to ensure proper sole playability from all types of turf and lie conditions.

- 770CFE irons are finished in a bright satin polish finish, with all faces CNC machined for precision dimensional specifications.