MNH Tungsten Rings for Men Women Wedding Band 4mm Comfort Fit Matte Finish Size 4-12 Upgraded version of the high-hardness cemented carbide structure, excellent scratch resistance, longer use time. A finely finished matte surface, a high-quality smooth inner surface, give you unparalleled comfort Elegant 4mm width, perfect wearing width Durable, nice weight, benefiting from cemented carbide construction If you have any questions, you can post into "Customer Questions & Answers" at the bottom of this page or feel free to contact us.