This 8 mm Tungsten band has a black plated Tungsten stripe. The inside of the band's shank is rounded for comfort. Tungsten Carbide is virtually impossible to scratch and is much heavier and denser than gold. If you are looking for a durable ring that can go through all of life's adventures with you, look no further than a ring crafted from tungsten. Tungsten bands cannot be resized after purchase. Note: Shipping takes 4 to 6 business days.