Sub 70 639 CB vs Sub 70 639 MB
Side-by-side factory specifications. Differing values are highlighted.
Sub 70 639 CBforged from a billet with a CNC-milled back · DT-4 soft steelSub 70 639 MBforged from a billet with a CNC-milled back · DT-4 soft steel
Specification comparison
| Club | 639 CB loft | 639 MB loft | 639 CB lie | 639 MB lie | 639 CB length | 639 MB length |
|---|---|---|---|---|---|---|
| 3 | 20 | 20 | 59.5 | 59.5 | 39 | 39 |
| 4 | 22 | 22 | 60 | 60 | 38.5 | 38.5 |
| 5 | 25 | 25 | 60.5 | 60.5 | 38 | 38 |
| 6 | 28 | 28 | 61 | 61 | 37.5 | 37.5 |
| 7 | 32 | 32 | 61.5 | 61.5 | 37 | 37 |
| 8 | 36 | 36 | 62 | 62 | 36.5 | 36.5 |
| 9 | 40 | 40 | 62.5 | 62.5 | 36 | 36 |
| PW | 44 | 45 | 63 | 63 | 35.75 | 35.75 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Which should you choose?
The 639 MB is the weaker-lofted set — up to 1° weaker than the 639 CB. That trades raw distance for a steeper landing angle and more predictable stopping power into greens.
Both charts are reproduced in full on their own pages: Sub 70 639 CB specs and Sub 70 639 MB specs.