This black with white rows polished tungsten band ring is made of tungsten carbide. Maintenance free, scratch resistant and hypoallergenic (cobalt free and nickel free). Comfort fit design (rounded dome shaped inside design) make the ring slide on your finger easily and sit on your finger more comfortably. Band measures about 8 mm. Brand: BERRICLE Design: Novelty Style: Bands & Sets Occasion: Valentine's Day Resizable: No Adjustable: No Size/Dimensions: 12 Gift Box: Gift Box