It's Tungsten Carbide His and Hers Wedding Band Ring Set. 4mm Hers and 8mm His. Ring Sizes From 4 to 14. Free Engraving His and Hers wedding ring tungsten carbide band 8mm mens band and 4 mm womens band comfort fit wedding ring set FREE ENGRAVING INSIDE BOTH RINGS PLEASE ADD TO YOUR CART AND CHECK MART THE GIFT MESSAGE AND ENTER THE BOTH RING SIZES