Features CONVENIENT AND BEAUTIFUL SHAPE: Pushpins are perfectly designed and easy to hold. The size is right, the surface is smooth, and looks pretty and cute POWERFUL MAGNETS: Excellent magnets provide great strength and can hold A4 paper (small 17pcs, medium 22pcs, large 31pcs) APPLICABLE SCENARIO: Strong metal magnets are suitable for use in the office or at home, for whiteboards, refrigerators and dry erase boards RUSTPROOF PROTECTION: The magnet in the thumbtack has 3 layers of coating, nickels, copper, nickels, which can perfectly protect the magnet from rust. The smooth surface make your furniture avoid scratching, and the exquisite processing technology make the INNOVATION DECORATION: 10 magnetic thumbtacks are also good material for your creativity and art. You can use small and cute magnetic thumbtacks to edit colorful art life, and is also a good stationery that you can not put down Specification: Item Type: Refrigerator Magnets Material: Neodym iron boron and metal Size: Approx. 12 x 16mm / 0.47 x 0.63in Coercivity: 915 (KA/m) Remanence: 12.1-14.3 (T) Intrinsic Coercivity: 955 (KA/m) Maximum Magnetic Energy Product: 34-36 (KJ/m³) Density: 7.5 (g/cm³) Working Temperature: 80 (℃) Package List:10 x Refrigerator Magnets 1 x Storage box Note:Please allow tiny size error due to manual measurement. Thanks for your understanding. Package List 10 x Refrigerator Magnets 1 x Storage box