The puzzle is not large, measuring just about 1 1/2 inches in diameter. For its smallish size, is is heavy and feels hefty in the palm, due to its all brass construction. Six interlocking pieces make up the puzzle when solved.
The puzzle is not really difficult to solve once you start prodding around to see how to take it apart. So as not to give the solution away, let's just say that once the first correct move has been made, the rest of the pieces unlock pretty easily. I would say that it is rather the assembly of the puzzle that is much harder (at least in my opinion). Even after having solved the puzzle no less than 7 or 8 times, I still find it pretty fiddly (particularly if you have large fingers) to get the individual pieces in place and lock the puzzle together to the solved state.