Callaway Apex MB 21 vs Callaway Apex Pro 21
Side-by-side factory specifications. Differing values are highlighted.
Callaway Apex MB 21forged muscle back · forged 1025 carbon steel with a tungsten swing-weight screwCallaway Apex Pro 21forged body with a hollow long-iron construction and urethane microspheres · 1025 mild carbon steel body with tungsten weighting and urethane microspheres behind the face
Specification comparison
| Club | Apex MB 21 loft | Apex Pro 21 loft | Apex MB 21 lie | Apex Pro 21 lie | Apex MB 21 length | Apex Pro 21 length |
|---|---|---|---|---|---|---|
| 3 | 20.5 | 20.5 | 60 | 60 | 39 | 39 |
| 4 | 23 | 23 | 60.5 | 60.5 | 38.5 | 38.5 |
| 5 | 26 | 26 | 61 | 61 | 38 | 38 |
| 6 | 30 | 29 | 61.5 | 61.5 | 37.5 | 37.5 |
| 7 | 34 | 33 | 62 | 62 | 37 | 37 |
| 8 | 38 | 37 | 62.5 | 62.5 | 36.5 | 36.5 |
| 9 | 42 | 41 | 63 | 63 | 36 | 36 |
| PW | 46 | 45 | 63.3 | 63.5 | 35.75 | 35.75 |
| AW | 50 | 50 | 63.5 | 63.5 | 35.5 | 35.5 |
Highlighted cells differ between the two sets. Lofts and lies are factory standard.
Which should you choose?
The Apex Pro 21 is the stronger-lofted set — up to 1° stronger than the Apex MB 21 on matching clubs. Expect longer carry per numbered iron but a flatter descent angle; gapping at the wedge end is where that shows up.
Both charts are reproduced in full on their own pages: Callaway Apex MB 21 specs and Callaway Apex Pro 21 specs.