This disc is a brand new, never been thrown, mint condition, Discraft 1ST RUN Z NUKE OS.  This disc is a sweet distance driver for people with slower arm speeds!

Z Nuke OS™
 

Big D for big arms! Created for expert players and windy conditions, NUKE OS (Over Stable) is a super fast driver that rewards power throwers with insane distance potential. Will finish on a hyzer even in strong winds, and offers the most dependable consistency of any high speed driver on the market.