It's an Advanced Dungeons & Dragons Fighting Wheel gaming aid. These were published here in the UK in 1981, but didn't take off - probably because they look fiendishly complicated. Accordingly, only a run of 1000 of the Number 1 Wheel (Fighters, Paladins, Rangers and Bards) was produced.
The eBay listing is here. There is no buy-it-now option on it.