# aabbMargin

> Get the distance used to expand AABBs in the broadphase dynamic tree, in meters. This allows broadphase proxies to move by a small amount without triggering a tree adjustment. This value is 0.05f * _lengthUnitsPerMeter. Normally this is 5cm.

## Definition

* **Type:** Property
* **Namespace:** [Unity.U2D.Physics](/engine/6000.5/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public static float aabbMargin { get; }
```