# Sandbox.PhysicsJointBuilder.Frame1

```csharp
Transform Frame1 { get; set; }
```

The joint frame in the local space of [Sandbox.PhysicsJointBuilder.Body1](/api/Sandbox.PhysicsJointBuilder/Body1).

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