Simple carbon rings, 3mm wide and 1.6mm thick, available in carbon, titanium, tantalum, sterling silver, palladium, platinum, stainless steel, or various gold alloys. The titanium and carbon versions are available here in the shop. The image shows carbon, gold, and silver. These rings are also perfect as stacking rings. The round rings with a 2mm cross-section are also very suitable for this purpose. The rings are available in inner circumferences from 50-70 mm. Larger or smaller rings, as well as rings in other widths and alloys, are available as custom orders. Don't know your ring size? No problem: Upon request, I will send you a ring sizer after payment is received, which you can keep (free of charge within Germany - for international shipments, the shipping fee for the ring sizer will be retained if the ring is subsequently exchanged). Furthermore, you have the opportunity to try on the chosen piece during the return period. This way, you can easily return the ring if it doesn't fit perfectly. I will then send you the same item in the appropriate ring size as soon as possible (free of charge within Germany if you subsequently make a purchase).