Features: Super strong,keychain magnets with neodymium magnets ,super strong magnets ,and high duty ,100kg adsorption force,not fall down. Portable magnetic keychain,this magnetic keychain is strong, small, light in weight, and easy to carry. you can put it in your pocket or purse when you go out. High quality material ,the haning for key holder is made of stainless steel material,strudy ,durable ,reusable. Practical,keyring magnets is not only use be haning keys holder but aslon can help you identifying fake silver and gold jewelry!versatile multi-functional magnetic testing tool. Wonderful sweet gift ,it can be a delicate gift for friend ,family ,or yourself. Specifications: Material:Stainless Steel Size:12,15,17,21,25,28 Note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item. Package includes: 1 Piece Keychain Magnets