Knurl Ring (multiple sizes + F3D file)

There are multiple sizes in STL to choose from. If anyone needs an in between size you can scale the closest ring size it in the slicer.

If your size is much larger or smaller leave a comment asking for your size and I can update this post.

Recommended slicing settings: 

Layer height: .2mm

Infill: doesn't matter

If you have Fusion 360 : Use the F3D file to make the ring any size by changing the finger size in the parametric setting (under User Parameters).