This is the "minimum" cube you must buy if you want to feel the glorious heft of tungsten in your hand. I purchased the 1-cm cube first, which was a waste, because it's simply too light - the density doesn't really register. The one-inch cube is also too light to be remarkable. But this one... this one is terrific. When you pick up the 2-inch cube, you realise you're not handling something mundane. This thing is dense.

The manufacturing quality is superior. I've seen cheaper cubes that had a rough finish, and edges and corners sharp enough to be uncomfortable to hold. But this one has a beautiful brushed finish with radiused edges and corners.

When I purchased this, I was reasonably sure it would be the kind of novelty item that's interesting for a day or two, then loses its luster. Happily, that has turned out not to be the case at all. Far from being purely ornamental, it's a superb hand/finger exercise tool. What sets it apart from normal weights like dumbbells is, of course, its density. It's not practical to have a dumbbell sitting on your desk, but this cube fits in just fine. Dumbbells are also too big to work your fingers independently. This cube, on the other hand, is small enough that you can do all kinds of exercises that are simply impossible with a dumbbell or any other weight. Simply holding it between the tips of your thumb and fingers and turning it around, and doing finger/wrist flexions and extensions, is enough to give your finger, hand, and wrist muscles a respectable workout. You can try lifting it with a thumb and two fingers, or a thumb and one finger, to build your grip strength. When you can pick it up between your thumb and little finger, you'll know that you have strong hands. (A tungsten cube every other day keeps RSI away? Quite plausible.)

The only problem is that you soon get used to the weight and hunger for something heavier, and these things are expensive - the price grows cubically, for obvious reasons. If Midwest Tungsten were to provide an adjustable cuboid that let you add plates incrementally, that would be an excellent tool for building hand/finger/wrist health and strength.