The 4CU is DMMs extremely well made and finished twin stem cam.
It has a smooth action, is easy to use with or without gloves on and also happens to be one of the lightest cams on the market at the moment, especially when you take into account the fact that it comes with a double dyneema sling, which means that you can quite often get away with carrying less quickdraws.
Colour coded anodising and slings.
Overall, an excellent cam.
| Size | Weight (g) | Strength | Colour | Range (mm) | Passive Strength |
| 0 | 75 | 14kn | Blue | 13-19 | 10kn |
| 0.5 | 80 | 14kn | Red | 17-24 | 10kn |
| 1 | 93 | 14kn | Gold | 19-29 | 10kn |
| 1.25 | 96 | 14kn | Purple | 21-33 | 10kn |
| 1.5 | 97 | 14kn | Silver | 23-35 | 10kn |
| 1.75 | 99 | 14kn | Green | 25-41 | 10kn |
| 2 | 110 | 14kn | Red | 29-44 | 10kn |
| 2.5 | 123 | 14kn | Gold | 33-55 | 10kn |
| 3 | 151 | 14kn | Purple | 43-66 | 10kn |
| 3.5 | 185 | 14kn | Blue | 51-82 | 10kn |
| 4 | 224 | 14kn | Silver | 64-100 | 10kn |
