Black Diamonds Nut Tool has certainly stood the test of time. We've never seen anyone come close to breaking or bending one. The profile of the nose is slightly above average, easily removing fixed stoppers in all but the smallest cracks. It has a nice hook and a good shape, helping it retrieve stuck cams by latching onto their triggers during attempts to retrieve them. At $10 it is a great value, but it was the most palm-bruising of any nut tool we tested.
For climbers on a tight budget, this tool is quite functional and gets the job done. If you are willing to spend a little more money, most people would be happier either in the lighter or more comfortable category. For another $5, the Wild Country Pro Key performed much better and is more comfortable.