# Chunk

> The chunk containing the specified Entity.

## Definition

* **Type:** Field
* **Namespace:** [Unity.Entities](/engine/7000.0/script-reference/unity/entities.md)
* **Assembly:** UnityEngine.EntitiesModule

```csharp
public ArchetypeChunk Chunk
```

### Remarks

Users should be extremely careful when accessing this field from job code. Specifically, multiple threads must not modify the same [ArchetypeChunk](/engine/7000.0/script-reference/unity/entities/archetypechunk.md). The type is not thread-safe, and parallel writes will result in race conditions and unpredictable behavior.