Dilanco 8mm Black Beveled Tungsten Carbide Men's Comfort Fit Wedding Bands Rings with Superman Two types for choice, Genuine Tungsten Carbide and Titanium Rings. Tungsten Rings:8mm(12.3g)  Titanium Rings:8mm(3.3g) Cobalt Free and Hypoallergenic & scratch resistant& Comfort Fit Design Includes a deluxe burgundy jewelry Box for perfect gift Risk-Free Shopping: Quality assurance and 90-day refund guarantee