| 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) |