# xDrive

> The properties of drive along or around X.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.3/script-reference/unityengine.md)
* **Assembly:** UnityEngine.PhysicsModule

```csharp
public ArticulationDrive xDrive { get; set; }
```

### Remarks

This can be linear drive or rotational drive.

The drive's `lowerLimit` and `upperLimit` must be within the range that the physics SDK defines for this joint type. If they don't, the values are automatically clamped and a warning is logged.