# Sandbox.ModelBuilder.AddHitboxSet

```csharp
HitboxSetBuilder AddHitboxSet(string name = default)
```

Adds a named hitbox set.

### Parameters

- `name` (`string`), default `default`: The hitbox set name.

### Returns

`HitboxSetBuilder`: A builder for the new hitbox set.

Declared in [Sandbox.ModelBuilder](/api/Sandbox.ModelBuilder).
Assembly: `Sandbox.Engine`.