# Interface: GearJointOpt

Gear joint definition.

## Extends

- [`JointOpt`](/api/interfaces/JointOpt)

## Extended by

- [`GearJointDef`](/api/interfaces/GearJointDef)

## Properties

### collideConnected?

> `optional` **collideConnected**: `boolean`

Set this flag to true if the attached bodies
should collide.

#### Inherited from

[`JointOpt`](/api/interfaces/JointOpt).[`collideConnected`](/api/interfaces/JointOpt#collideconnected)

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### ratio?

> `optional` **ratio**: `number`

The gear ratio. See [GearJoint](/api/classes/GearJoint) for explanation.

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### style?

> `optional` **style**: [`Style`](/api/interfaces/Style)

Styling for dev-tools.

#### Inherited from

[`JointOpt`](/api/interfaces/JointOpt).[`style`](/api/interfaces/JointOpt#style)

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### userData?

> `optional` **userData**: `any`

Use this to attach application specific data to your joints.

#### Inherited from

[`JointOpt`](/api/interfaces/JointOpt).[`userData`](/api/interfaces/JointOpt#userdata)