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

The 770CFE irons are designed with a variable thickness forged face to offer golfers a
little 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 face material composition and thickness. Thus, the #3 and #4 iron faces
are forged from Carpenter 455 high strength steel and are designed with a variable
thickness of 2.4mm/1.9mm.Then 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. And 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 through the set.

Thus 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.

Awards:
770CFE irons were awarded the Golf Tips Magazine's Top Concept Tech Award for
2004.

"One of the more intriguing iron sets of '04, the 770CFE by Tom Wishon represents the
first iron to feature a forged, variable-thickness face. According to Wishon, the variable
face thickness provides a higher ball speed-to-swing ratio and greater forgiveness.
Also, the face is constructed of three different steel strengths in an attempt to maximize
face deflection, which typically decreases as loft increases. For the layman in all of us,
the 770CFE means more distance, more forgiveness and a more consistent trajectory
from iron to iron."
770CFE Irons
770 specifications
Club  Loft  Lie   Weight Offset   LH Sole Angle   Toe Height   Heel Height   Blade Length
3-iron 21° 59.0° 239 g. 5.0 mm           1.0°         58.0 mm       33.0 mm         82 mm
4-iron 24  60.0   246    5.0        LH      1.5          59.0              33.5               82
5-iron 27  61.0   253    5.0        LH      2.0          60.0              34.0               82
6-iron 31  62.0   260    4.5        LH      2.5          60.0              34.0               82
7-iron 35  63.0   267    4.0        LH      3.0          60.5              34.5               82
8-iron 39  63.5   274    4.0        LH      3.5          61.0              35.5               82
9-iron 44  64.0   281    4.0        LH      4.0          62.0              36.0               82
PW    49  64.0   283    4.0        LH      5.0          62.0              37.0               82
AW    52  64.0   283    4.0                  5.0          62.0              37.0               82
SW    55  64.0   297    3.0                 12.0         63.0              39.0               82


Hosel Length 65mm on all 770 ironheads  
Bore Depth 30mm in all 770 ironheads
TWGT Weight Bore in all 770 heads for final weighting
Bore Diameter 0.370" parallel
Hosel O.D. - 13.2mm
Ferrule Required Yes. Choose iron ferrule with a 13.2mm bottom O.D.
Scorelines U-groove
Head Body Mat. Investment cast from 17-4 Stainless Steel
Face Material #3, 4 (Carpenter 455 HS Steel)
#5, 6, 7 (17-7 Stainless Steel)
#8, 9, PW, SW (304 Soft Stainless Steel)
Loft/Lie Bending Yes, but we do not recommend bending more than 2° in any direction.
Sole Width Range 3-iron (19.5mm/16mm)
6-iron (21mm/17mm)
9-iron (21mm/17mm)
Sole Radius Toe to Heel 350mm (#3-PW)
250mm (SW)  
Sole Radius Face to Back 50mm (#3-6)
60mm (#7-9)
70mm (PW)
80mm (SW)