Feature 1Air Oxidation: If the color darkens after use, it means you have a genuine brass key chain because brass oxidizes in the air and the color becomes retro. However, if you like its original color, just wipe it clean with toothpaste. 2Portable Size Brass Key Hook: This brass key chain is portable and lightweight, easy to carry. You can hang it on your belt, backpack, or handbag. 3Key Storage Device: The brass key chain a great helper for hanging various keys, such as car keys, door keys, cabinet keys, and house keys. 4Brass Material: This brass key chain is made of brass material, sturdy and durable, with a simple design but complete functionality. 5Opening and Closing: Novel opening and closing method, with one forceful pull to open and one gentle press to close.Item Type: Brass Key ChainProduct Material:BrassWeight: Approx. 13g / 0.5oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Brass Key Chain