---
description: Dive into Ultralytics detailed utility guide. Learn about Bboxes, _ntuple and more from Ultralytics utils.instance module.
keywords: Ultralytics, Bboxes, _ntuple, utility, ultralytics utils.instance
# Reference for `ultralytics/utils/instance.py`
!!! note
Full source code for this file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/instance.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/instance.py).
## ::: ultralytics.utils.instance.Bboxes
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## ::: ultralytics.utils.instance.Instances
## ::: ultralytics.utils.instance._ntuple