In the past, I've had cast sterling snake clips, but truth be told, I was only OK with their designs.
I recently enlisted the help of a friend to create some custom snake clips to my specifications and design.
I couldn't be happier with how they turned out.
They wrap around the cap of a Huron or Glenmont. Since they are not attached all the way around the cap, they are adjustable to a degree to make a perfect fit.
They are probably not all that functional, outside of keeping a pen from rolling off of a desk. They are more decorative. I wouldn't recommend slipping the clips over a real thick pocket, as they might bend. However, being sterling silver, they can easily be moved back into tension.
The clip is shown below in a black acrylic pen with a satin finish.
Being silver, I don't recommend these clips going onto an ebonite pen. The ebonite outgassing will tarnish the clip. However, the black acrylic that you see above is a perfect "faux" ebonite. It's rather soft, and not at all brittle like most acrylics. When a pen is finished in this acrylic, I can't tell the difference between this and ebonite without smelling.
This clip looks great with black acrylic. I have trouble picturing this clip on something with grain, or a wild material, as your eye would be divided between the material and the clip. However, I can see this clip with some other solid colors...blue, red, green, etc....