Fashion Plaza Unisex Tungsten Carbide Finely Polished Wedding Enagagement Band Ring 4mm R371 Comes with Free Gift Box Size 6-12 (12) Tungsten carbide,finely finished,last for a life-time. 100% scratch proof,the band is 4mm. Hypoallergenic Normally the shipping time is 7-15 days. Comes with a gift box.