HSG Wedding Band Tungsten Rings for Men Blue Groove 6mm Size 6-13 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 6mm width, perfect wearing width Durable, nice weight, benefiting from cemented carbide construction Lifetime Return Service.