> For the complete documentation index, see [llms.txt](https://kinemation.gitbook.io/scriptable-animation-system/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/scriptable-animation-system/fundamentals/animator-layers/ik-layer.md).

# IK Layer

## Description

This layer applies Two Bone IK algorithm based on the specified bones. The layer utilizes Unity Jobs system for a faster IK evaluation.

This layer is supposed to be the last one in the profile.

## Properties

<figure><img src="https://784345943-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxcUmJ78NSw1bSUlSO9oP%2Fuploads%2FGUXOwYli5kkZRrBzPzhd%2Fimage.png?alt=media&amp;token=8d862e1f-2a9d-4022-8b8e-551088d1d4fe" alt="" width="380"><figcaption></figcaption></figure>

IK postfix means the target object for the bone.

Hint postfix means the pole target, or the in-between bone, like knee or lowerarm/elbow.