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. Personalized and fashionable, this tungsten carbide ring will bring a stylish feeling to any look. The unique black leaves and green carbon fiber inlay tungsten ring is suitable for both dressy and casual wear, making this a thoughtful gift for him/her. For any occasion bridal, anniversary, engagement, or birthday, our scratch resistant rings are the perfect statement for that special gentleman or lady in your life. Why Choose Tungsten Carbide: Tungsten is the currently most popular jewelry material with high hardness and scratch resistant. If you are looking for a black wedding bands which is scratch resistant and forever keeps its shine, then our tungsten rings are best for you. Hypoallergenic and cobalt free. The tungsten rings will not cause skin allergies or turn your fingers green. Specification: Main Material:Tungsten Carbide, Carbon Fiber Color:Black and Green Clean Tips: 1.Mix a few drops of hand soap with a glass of warm water. Soak your ring for a few minute. 2.Buff away the tarnish. Rinse the ring under a stream of warm water. Once the ring is clean, dry off your ring with a cotton cloth.