The Snake Chain Link with scales for 5-Axis CNC and SLA, Micro-SLA, DLP, SCP, MJM 3D printing.

What you get:

All STL files come separately but are in the archives.
Attention! CGTrader shows each archive as one STL file.

.STL
The package contains four ZIP archives with different versions of links:
V0 - closed links
V1 - vertically open links
V2 - horizontally open links
V3 - cut links

Each archive contains:
28 sizes (3 mm - 30 mm), with high detail (HP)
28 sizes (3 mm - 30 mm), with medium detail (MP)
28 sizes (3 mm - 30 mm), with low detail (LP)

A total of 336 separate .STL files (approx 2.5 GB)

.3DM file for Rhino3D or Matrix with a single closed (unopened) chain link that you can scale to your liking (NURBS format).

.blend file for Blender 3D (free software) consists of three open links, which have different detail (hi-poly, middle-poly and low-poly).
SHAPE KEYS: Select the desired detail in Collections >> go to Object Data Properties >> Shape keys and you can change the opening direction and opening width of the link! (see images)
This is very useful when you choose the most convenient way to connect the links.

.ZTL file for ZBrush contains three closed (not open) subtools with links of different detail (hi-poly, middle-poly and low-poly).
No Subdiv levels or use of Layers. Just three closed links.

.OBJ files have different detail (hi-poly, middle-poly and low-poly).
The low-poly file has UV and comes with an archive of 4K maps for long chains rendering:

• ambient occlusion.png
  
• normal base.png
  
• position.png
  
• thickness.png
  
• world space normals.png
  

This chain link can be used with my Medusa pendants (you will need to scale the bail of the pendant to the desired chain size)

The Chain or Bracelet will well look in Rose Gold, White Gold, Silver or Platinum, and Yellow 18K Gold.
Snake chains fit all genders.
You can also use the trendy Iridescent shiny or Crystal Clear Acrylic style material with V3 version (it will need to make the cut smoother so that the links can be more easily inserted into each other).

STL files are healed and ready to prototype.

I will be glad for your feedback. Thank you!

Best wishes, JWORX