It's pro plastic with DX double stamps. Nice!
More on F2's
A Factory Second disc has cosmetic imperfections which do not affect flight or durability. These discs may contain bubbles or flecks in the plastic, other cosmetic imperfections, and/or multiple stamps. Stamp size, design, color, placement, and number of stamps on each factory second disc may vary widely.
Color preferences will only be fulfilled when available on a first come, first served basis.