DONGKER 12 PCS Blank Challenge Coins, 40mm Engraving Discs Coin Diameter, Solid Copper Base, Matte Red Finish, with Protection Case, No-burr Edge, Oxidation Resistant

Premium Material And Texture: Crafted with a solid copper base and finished with a matte red copper plating. The fine metal texture offers a substantial feel and a vintage aesthetic, providing a high-quality look for displays and personalized presentations. Thickened And Sturdy Construction: Each coin features a 40mm diameter and 3mm thickness. The rounded edge design ensures a solid, comfortable grip while maintaining a sturdy structure that avoids deformation or bending over time. Versatile For Multiple Occasions: Ideal for various uses including anniversary celebrations presents, event souvenirs, graduation mementos, wedding coins, tourist attractions, collections, and competition awards. Oxidation Resistant Finish: The surface is treated with an anti-rust glazing process, avoiding oxidation or darkening. This ensures your engraved patterns remain clear, vivid, and long-lasting for years of storage.