The inside of the band is rounded for comfort. Tungsten carbide is a true innovation in jewelry. Tungsten is virtually impossible to scratch and is much heavier and denser than gold. Custom made to fit his ring size. Tungsten rings cannot be resized after purchase. Designed for a modern man on the go, styles in the Eternal Bond Collection are created from high-performance metals that are durable, comfortable and fashionable. Brand: Eternal Bond Design: Plain/Engravable Style: Bands & Sets Occasion: Wedding Resizable: No Adjustable: No Size/Dimensions: 12 Gift Box: Gift Bag