The Titanium 6D (6mm D-Ring)

Use Project Atomic’s ring size guide before ordering. These Grade 2 titanium rings use a comfort-fit interior, but width still affects how a band feels, so measure rather than assuming the same fit across every profile. If you are between sizes, use the guidance on the size page before choosing.

If the size is wrong, an unworn ring can be exchanged within 30 days. Start with the ring size guide and pay attention to the width you are buying, particularly when moving from a narrow 2.5mm band to a broader 6mm or 8mm ring.

Yes. Low weight is one of the most noticeable differences between titanium and tungsten carbide. Grade 2 titanium gives the ring a light feel on the finger while retaining the clean, technical character of a real engineering metal. It is a useful choice if you like the material story without the substantial heft of tungsten.

Project Atomic doesn’t offer resizing, so choose the size carefully before ordering. Use the ring size guide first. If the fit is wrong, send the ring back unworn within 30 days and it will be exchanged for another size where possible.

The “F” engraved inside the band is Project Atomic’s maker’s mark. It stands for Fahrenheit, referencing the high temperatures associated with producing and working with the materials behind the range. Every Project Atomic ring carries the mark inside the band.

It rounds the entire outer face into a continuous dome, which softens the appearance of the 6mm width. Instead of seeing a level surface and hard corners, you see a curved profile that changes gradually from centre to edge. The width still gives the ring noticeable presence, but the D shape makes that presence less angular than the flat or bevelled alternatives.

It sits between the narrower 5mm D shape and the broad 8mm version, so it offers a useful balance of visibility and restraint. The curve is wide enough to be a clear part of the design, while Grade 2 titanium prevents the larger dimensions from feeling particularly heavy. It suits someone who wants a definite band without choosing the maximum width.