Out of 9 pages, 4 are the map tiles.
Pages 3-6 are the tiles; pages 7-9 are the random dungeon map method instructions.
Page 2 gives a page of information about the tiles.
The tiles themselves are a pale grey, with white 'parts/sections', giving a 'crazy paving' pattern for 5ft tile.
As stated in the discussions, they are a minimalist set, but that souldn't pose a problem.
Other 'parts' from other sets (Crooked Staff Publishing and other publishers) can be used to 'expand' the map the GM has in mind.
I like the 'printer friendly' background (saves on ink). Perhaps a 'layer' option for those that like the 'dark stone' look in the background?
For £0.78p/$1, it's a pretty good minimalist set of tiles to expand others.