The picture shows the ring width is 8mm Rings Width:4MM 6MM 8MM 10MM(If you want a width that is not in the options, please contact customer service, we will reply within 12 hours.) Us Size:5/5.5/6/6.5/7/7.5/8/8.5/9/9.5/ 10/10.5/11/11.5/12/12.5/13/13.5/14/14.5/15 Note: the character of the inside ring is "Tungsten carbide", which is deleted as default. If you stick to have it engraved on "tungsten carbide" inside of ring, please tell me and email to us when you have ordered. Women's or Men's Tungsten Carbide Wedding Band Gear Rings,Wedding ring band Black with Mechanical Gear Silver Over Black Carbon Fiber,Tungsten Carbide Ring With Mens And Womens Rings For 4MM 6MM 8MM 10MM Tungsten carbide is ranked second hardest next to diamond on the Mohs scale, diamond being a 10 followed by Tungsten carbide as 9. Tungsten material does not cause irritation on the skin. Due to the Hardness of Tungsten carbide, Tungsten rings may be laser engraved, but CANNOT be engraved by hand. They CANNOT be stretched. A black Tungsten Carbide wedding band with a mechanical gear silver over black carbon fiber inlay would be a unique and stylish choice for both men and women. The contrast between the black and silver colors would create an eye-catching design, and the use of carbon fiber adds a modern touch. The addition of the mechanical gear design adds an industrial and masculine feel to the tungsten ring for men, making it a perfect choice for couples who want something bold and unconventional. This ring is available in widths of 4MM, 6MM, 8MM, and 10MM, making it a versatile option for any couple. The comfort fit design of this black wedding bands ensures a comfortable wearing experience, which is especially important for those who plan to wear their wedding band daily. The ring is also available in a range of sizes to ensure a perfect fit for both men and women.