Best Retraction Test

This is the test I used, its based on another design i dont recall where I found it. It prints very fast, and provides great results for retraction testing, sometimes my retraction settings would look good with other tests but this one should really make them look bad.

Heres my youtube channel, I have 3d Printing Videos along with other content:
https://www.youtube.com/channel/UCfhzzr7dShO0YUF7YD1k9Dw