From the release:
Modular Kit: Caves - Large Caverns is a printable dungeon tileset compatible with any RPG/Dungeon-Crawl game. It can be used as a standalone set, or combined with any same-scale tileset.
Modular Kit: Caves - Large Caverns comprises 10 different tiles that can be printed multiple times and arranged in limitless combinations, and combined with maps from the Modular Caves set.
PDF printable sheets, with both gridded and non-gridded versions
A set of 300dpi full size png files, for poster printing or VTT.
A sheet of wall and floor textures, for custom wall layouts
This set is compatible with the 2.5D crafting system, a crafting technique for making dungeon tiles more than 2D but not quite 3D. The 2.5D system was created by DM Scotty (Google his forum for tips)