> For the complete documentation index, see [llms.txt](https://kinemation.gitbook.io/retarget-pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kinemation.gitbook.io/retarget-pro/workflow/retarget-features/ik-feature.md).

# IK Feature

**IK Feature** is powered by inverse kinematics to accurately retarget motion. It's often used to retarget arms and legs chains.

<figure><img src="/files/VWgl97fWGxwCDZQOWzoa" alt="" width="467"><figcaption><p>IK Retarget Inspector.</p></figcaption></figure>

* IK Weight — Controls the influence of the IK.
* Use Chain IK — Toggles IK for long bone chains. It's recommended to keep it false for Humanoids, and true for Quadrupeds.
* Effector Offset — Position offset for the IK target.
* Effector Space — Which space the effector offset will be applied in.
* Joint Bone — hint or pole target bone (e.g., elbow or a knee).
* Joint Offset — hint or pole target offset.
* Pole Weight — Controls the influence of the pole/hint target.
* **Max Reach Multiplier** — Max allowed stretch length.