Material:Tungsten and Carbon Fiber Color:Silver & Blue Length 35mm Width 11.7mm Thickness 4.3mm We will send two chains for free: Leather rope chain length: 51.5CM (20.28 inches) Titanium steel chain length 60cm (As shown) we can offer you chain's styles and length as required Shipping Delivery within 3-5 business days! Can be lettering and custom patterns. Tungsten carbide is ranked second hardest next to diamond on the Mohs scale, diamond being a 10 followed by Tungsten carbide as 9. Women's Or Men's Jewelry Fashion Men's Tungsten Pendants Blue Carbon Fiber Inlay With Necklace Jewelry Gifts For Mens And Womens