What kind of spacer ring should I do?

I need advice on what kind of spacer ring I should go fortwisted rope? Knife edge? Silver or Rose Gold color? I know 1.5mm is a good thickness to start with but the style is where I don’t know

3 Reasons You Need A Spacer Band In Your Ring Stack - Adiamor Blog

Flanges - ASME B16.48 - Spades/Ring Spacers - dimensions Class 150-2500

What kind of spacer ring should I do?

KB Pistons - Dowel Pin? Now Proper Ring Installation

What kind of spacer ring should I do?

To achieve the best astroimages, it is important to attain the proper back-focus distance for your camera relative to the telescope it is being used with. If the back-focus distance your camera consumes is not exact, the performance at the corners of full frame imaging sensors will suffer—stars will appear elongated and not as pinpoints.

Celestron M42 Spacer Ring Kit 93618

Ring Guards & Spacers

Pave Diamond Open Spacer Ring, 14k 18k Solid Gold Stack Wedding Band, Promise Anniversary Jewelry, Under Solitaire Straight Band Ring

Single Spacer Ring Grey

3 Reasons You Need A Spacer Band In Your Ring Stack - Adiamor Blog

Should I solder my rings, wear a spacer, or risk prong damage? : r/jewelry

You may personalize it by adding names, dates or initials. Please specify uppercase or lowercase. Rings do not come in half sizes. We cannot

STACKABLE RING WITH SPACER