# JointInstance

Roblox Engine API class from Roblox Studio 0.744.0.7441077 (version-7aaa6838d36c4448).

- Inherits from, nearest first: [Instance](https://rapi.sleaze.dev/classes/Instance.md), [Object](https://rapi.sleaze.dev/classes/Object.md)
- Subclasses: [DynamicRotate](https://rapi.sleaze.dev/classes/DynamicRotate.md), [Glue](https://rapi.sleaze.dev/classes/Glue.md), [ManualSurfaceJointInstance](https://rapi.sleaze.dev/classes/ManualSurfaceJointInstance.md), [Motor](https://rapi.sleaze.dev/classes/Motor.md), [Rotate](https://rapi.sleaze.dev/classes/Rotate.md), [Snap](https://rapi.sleaze.dev/classes/Snap.md), [VelocityMotor](https://rapi.sleaze.dev/classes/VelocityMotor.md), [Weld](https://rapi.sleaze.dev/classes/Weld.md)
- Tags: Not creatable
- Memory category: BaseParts
- HTML page: https://rapi.sleaze.dev/classes/JointInstance/
- Roblox documentation: https://create.roblox.com/docs/reference/engine/classes/JointInstance

The base class for joints.

## Properties

### Active

```luau
JointInstance.Active: boolean
```

- Tags: Read only, Read capabilities: Physics

Determines if the joint is currently active in the world.

### Enabled

```luau
JointInstance.Enabled: boolean
```

- Tags: Read capabilities: Physics

Sets whether the joint is active or not.

### C0

```luau
JointInstance.C0: CFrame
```

- Tags: Read capabilities: Physics

Determines how the offset point is attached to [`JointInstance.Part0`](https://rapi.sleaze.dev/classes/JointInstance.md).

### C1

```luau
JointInstance.C1: CFrame
```

- Tags: Read capabilities: Physics

Subtracted from the [`C0`](https://rapi.sleaze.dev/classes/JointInstance.md) property to create an offset point for [`Part1`](https://rapi.sleaze.dev/classes/JointInstance.md).

### Part0

```luau
JointInstance.Part0: BasePart
```

- Tags: Read capabilities: Physics

The first [`BasePart`](https://rapi.sleaze.dev/classes/BasePart.md) that the joint connects.

### Part1

```luau
JointInstance.Part1: BasePart
```

- Tags: Read capabilities: Physics

The second [`BasePart`](https://rapi.sleaze.dev/classes/BasePart.md) that the joint connects.

### part1

```luau
JointInstance.part1: BasePart
```

- Tags: Deprecated, Hidden, Not replicated, Read capabilities: Physics
- Use instead: [`JointInstance.Part1`](https://rapi.sleaze.dev/classes/JointInstance.md)

**Deprecated:** This deprecated property is a variant of [`Part1`](https://rapi.sleaze.dev/classes/JointInstance.md) which should be used instead.

## Inherited members

- From [Instance](https://rapi.sleaze.dev/classes/Instance.md): `Archivable`, `archivable`, `Attributes`, `AttributesReplicate`, `AttributesSerialize`, `HistoryId`, `Name`, `Parent`, `PredictionMode`, `PropertyStatusStudio`, `RobloxLocked`, `SerializedOverrides`, `SourceAssetId`, `Tags`, `UniqueId`, `numExpectedDirectChildren`, `DataCost`, `Capabilities`, `DefinesCapabilities`, `IsInSandbox`, `Sandboxed`, `AddTag`, `ClearAllChildren`, `Clone`, `Destroy`, `FindFirstAncestor`, `FindFirstAncestorOfClass`, `FindFirstAncestorWhichIsA`, `FindFirstChild`, `FindFirstChildOfClass`, `FindFirstChildWhichIsA`, `FindFirstDescendant`, `GetActor`, `GetAttribute`, `GetAttributeChangedSignal`, `GetAttributes`, `GetChildren`, `GetDebugId`, `GetDescendants`, `GetFullName`, `GetStyled`, `GetStyledPropertyChangedSignal`, `GetTags`, `HasTag`, `IsAncestorOf`, `IsDescendantOf`, `IsPropertyModified`, `QueryDescendants`, `RemoveTag`, `ResetPropertyToDefault`, `SetAttribute`, `WaitForChild`, `Remove`, `children`, `clone`, `destroy`, `findFirstChild`, `getChildren`, `isDescendantOf`, `remove`, `AncestryChanged`, `AttributeChanged`, `ChildAdded`, `ChildRemoved`, `DescendantAdded`, `DescendantRemoving`, `Destroying`, `StyledPropertiesChanged`, `childAdded`
- From [Object](https://rapi.sleaze.dev/classes/Object.md): `ClassName`, `className`, `GetPropertyChangedSignal`, `IsA`, `isA`, `Changed`