Style Number: SGTW6131 This band is designed in Hawaiian Koa wood with brushed black beveled tungsten carbide bands. Hawaiian Koa is widely regarded as one of the most beautiful woods in the world. Its grains range from dark coffee heartwood to bright golden hues. This ring is perfect as a wedding ring, anniversary gift, promise ring, birthday gift, or gift for someone special. All our wooden rings are sealed in marine-grade marine epoxy resin, making them completely waterproof and very durable. Tungsten ribbon is 4 times harder than titanium, 5 times harder than steel and 10 times harder than gold. Its hardness is second only to diamond. With incredible scratch resistance, tungsten will always retain its shine and shape. Its eternal power is the perfect symbol of eternal love. Our Suggestion: Want this ring but are not sure about your size? Select the "Not sure - send ring sizer first" size option and we'll send you a free ring sizer before making your ring. Making sure your ring fits is a crucial part of the ring shopping process. All SagaBands Rings are sized in US sizes. Ring Detail: Materials: Tungsten, Hawaiian koa Wood Wide：6mm,8mm Comfortable Fit Lifetime Warranty Return Policy Each Ring Includes: Saga Bands Silicone Ring Set Saga Bands wooden ring box