From publisher blurb:
Dungeon Core Set contains 25 generic geomorphic tiles that will allow you to build a simple yet extensive dungeon.
Dungeon Core Set is a printable geomorphic tile set, compatible with any RPG/Dungeon-Crawl game.
Dungeon Core Set contains 25 unique 6x6 geomorphic tiles that can be arranged in thousands of combinations.
Also included is a set of 300dpi full size jpgs, for poster printing or VTT. Please note that the pages are set as A4. You'll need to adjust if printing on US paper.