These delves are designed to be played in a single one or two hour session. They're great side quests, or can be added to an existing campaign using the hooks provided. The dungeons are fully fleshed out, and far from "generic."
Every delve consists of a map, room descriptions, adventure hooks, background, and "what comes next" hooks.
They are level neutral, and 5e compatible. However, they can easily be converted to other fantasy RPG systems.