Proto-Concept C01 vs Proto-Concept C05
Side-by-side factory specifications. Differing values are highlighted.
Proto-Concept C01forged one-piece muscle back with forged-in titanium rod (5-7 irons) · S20C carbon steel with inner titanium (#5-#7), S25C carbon steel (#8-PW)Proto-Concept C05pocket cavity (forged SAE8655 face welded to S25C body) · SAE8655 chromium-molybdenum steel face, S25C carbon steel body
Specification comparison
| Club | C01 loft | C05 loft | C01 lie | C05 lie | C01 length | C05 length |
|---|---|---|---|---|---|---|
| 5 | 25 | 25 | 60.5 | 61 | 38 | 38.25 |
| 6 | 28 | 28 | 61 | 61.5 | 37.5 | 37.75 |
| 7 | 32 | 32 | 61.5 | 62 | 37 | 37.25 |
| 8 | 36 | 36 | 62 | 62.5 | 36.5 | 36.75 |
| 9 | 40 | 40 | 62.5 | 63 | 36 | 36.25 |
| PW | 45 | 45 | 63 | 63.5 | 35.5 | 35.75 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Which should you choose?
The C01 and C05 share the same lofts on every club on file, so the difference is in head construction, feel and forgiveness rather than trajectory.
Both charts are reproduced in full on their own pages: Proto-Concept C01 specs and Proto-Concept C05 specs.