that is very cool! I've played a fair bit of chess in my time with some crazy figures; star wars (original and prequel versions), the hobbit, the simpsons and others, but those pieces look like modern art.
Friend just sent me this and I found it interesting Chess set pieces made from nuts and bolts
7 Unique nut and bolt chess sets recycling hardware waste | Designbuzz : Design ideas and concepts
a lot of creativity has gone into it!